There exists a cascade in which energy dissipates through a series of levels. At each level, the waste product of dissipation has a specific chemical identity. That identity constrains what can crystallize from it. What crystallizes becomes the feedstock for the next level. The process has been running for 13.8 billion years.
This cascade is not a thing created through optimization. Each transition is made through the process of satisficing: a solution that was available, not fatal, and whose byproducts happened to be composable with what came next, whenever that happened. Read forward, it looks like design. Read as it happened, it is a series of kludges whose waste products could be made to be load-bearing.
Life, as they say, began the first time someone's kid peed in the pool. What it says about us that it continued when someone else's kid drank it is a question left up to the reader.
The beginning of the universe was a rather quick thing. The type of thing where if you blink, you've missed it and hardly any one was around back then to see it, so perhaps one more metaphor is in order before we get down to the boring stuff.
Imagine, you and the missus headed to the beach for a lovely day of sun and fun. It's just after noon and the sun is directly overhead. You and she finally find a parking spot after circling for hours. Your wife, a physicist by trade conveniently enough, comments "it's like the heat death of the universe in this place, nothing is moving". Finally, a hole had opened up and you were able to flow into the spot, just in time to let the car that you'd been blocking in while that lovely couple (wouldn't you please mind hurrying) got their lovely family (if you'd just hold on to the little one, she'd not run away while you got the older buckled) into their car.
You're a bit hot and bothered by the time you've made the trek across the parking lot, the sun beaming directly down and your wife comments "it's probably not been this hot anywhere since moments after the big bang". You normally find her little nerdy comments adorable, today is an exception.
Finally reaching the beach, missus, little ones, and a cooler in tow, you find a spot that's as yet unoccupied, turn and ask your wife if she's brought the sun umbrella.
The only thing hotter than the sunbaked sand that you and your family are now camped out on is your face, as your embodied reaction to both having said "I'll just set this down here honey, don't worry I'll get it before we go" and now heard "you have the momentum of a stationary object and the intelligence to match" is still working its way out of your own internal cascade.
As the day progressed, the sun began to dip and your little universe of unbearable heat began to cool. Just a tip of an umbrella casting a small shadow on the corner of your blanket had been enough for a raised eyebrow and a quick "Honey, your brain just experienced inelastic collision with reality if you think you're having that" as she moved to claim the only break either of you had had from unrelenting heat in hours.
Finally, pitying you she turns her head and says "Okay, suffering complete. Now get over here—we still have strong nuclear forces between us. Even when you're being dense, you're still the only mass that attracts me." Feeling somewhat unsure if she likes you or not, you agree to a rotation, each taking turns reducing their own gradient in the shade before flowing smoothly into the gap their now overwarm partner has left in their haste to cool.
All the energy that would ever exist entered once. Since then, the story has been that energy finding its way downhill, crystallizing into structure as it goes. The same pattern we will trace through biology, waste constraining the present while feeding the future, operates at every level. But the early cascade has a property the later stages lack. For the first several billion years, the outcomes are forced. There is no satisficing because there are no alternatives to satisfy among.
In the first few minutes after the Big Bang, protons and neutrons combined into simple atomic nuclei. Seventy-five percent hydrogen, twenty-five percent helium, traces of lithium. That ratio was dictated by both the expansion rate and the strength of the weak nuclear force, which together determined how many neutrons could be captured into helium before the universe cooled past the point where fusion could continue. The universe had a single address, one basin. The universal marble rolled into it because there was nowhere else to go.
Stars form because they must. Gather enough hydrogen and gravity does what gravity does. The gas compresses, heats, and when the core reaches fusion temperature, hydrogen begins fusing into helium. When the hydrogen runs low, the core contracts, heats further, and helium fuses into carbon. Then oxygen, then silicon, then iron. Each step is the next exothermic reaction available at whatever temperature the collapsing core has reached. Iron is the end of the line. Fusing iron absorbs energy rather than releasing it. The periodic table from hydrogen to iron is the waste product of stars trying to stay warm against a cold universe's endless night.
There is one genuine contingency in this stretch, one place where what is isn't what had to be, and it is worth knowing because it shows what contingency looks like when the space is still small. Carbon-12 has a nuclear resonance at precisely the energy that allows three helium nuclei to combine efficiently. Fred Hoyle predicted it would exist before anyone found it, reasoning backwards from the fact that carbon-based life exists. Without this resonance, carbon would be vanishingly rare and the cascade would have stalled at helium. The Hoyle state is not a selection from alternatives. It is simply how the strong force happens to work at that energy. But if it had worked differently, we would not be here to discuss it. This is where one might glimpse God, if they were to look up through time. A pinch point that could go either way. Through that lens, one can see God in the bingo caller, or more rightly the tumbler that dropped the first B9 causing our dear friend Agnes to spring to life in a joyous call of "BINGO", spilling her water.
Massive stars end as supernovae because core collapse releases more energy than the star can contain. The explosion scatters stellar ash into the interstellar medium—carbon, oxygen, silicon, iron, traces of everything heavier. A lifetime of wisdom shared back from whence it came. Like a cosmic whale fall, this is not a delivery mechanism that was designed. It is structural failure that happens to distribute precisely the materials that second-generation stars and rocky planets will need.
Our solar system formed from one such cloud. The planets accreted, differentiated. Iron sank to Earth's core, silicates floated to the crust, creating a boundary. Heat drives convection in the mantle, creating a gradient. Where cold seawater meets hot crust, chemistry happens and structure is born. Alkaline hydrothermal vents produce sustained proton gradients across mineral surfaces, running for millennia, requiring no life to maintain them. The computation of prebiotic chemistry accumulates quite a data lake - amino acids, nucleobases, lipid precursors, simple sugars - and these are not unique to Earth's environment. The Murchison meteorite, which formed in space and landed in Australia in 1969, contained over seventy amino acids. Life on Earth now uses 20 of these, and at this point in our story the planet had developed a rich industrial base to produce them. The feedstock for the next critical phase.
Here is the beginning of a phase change. Until this point in the cascade, aside from Agnes' lucky tumbler, almost everything that happened had to happen. However, the ratio of contingency to determinism increases as you move up the cascade. At early levels, the address space is small. The substrate permits one outcome, or so few that the marble easily finds the deepest basin. There is no satisficing because there is nothing to satisfice among. But as each denial opens new coordinates, the space expands. More basins exist. More becomes possible. As each layer builds upon the previous' structure, the feedstock becomes rich with potential. More basins means which one the flow lands in becomes dependent on local conditions, on accident, on path. The outcomes become satisficed rather than optimized. But what they find inside starts to become more and more like the universe it is compressing. This isn't decorative metaphor. The structure at each level provides the substrate for the algorithm at the next. You're doing it right now.
This is not an assumption. It is a consequence of how the cascade works. Each level's waste expands the possibility space for the next level's search. The waste becomes more complex, the fractal geometry within ripe with possibility. A larger space contains more local minima. More local minima means more paths that are good enough. The cascade transitions from deterministic—small space, one solution, recognizably physics—through contingent—larger space, many solutions, recognizably biology—toward arbitrary—vast space, no meaningful optimum, recognizably culture. While the problem space expands so does the size of the model it is able to successfully contain. The universe is a busy woman. Who's got time for an exponential search? When her structures permit compression, the search for your keys becomes polynomial in hierarchical depth. That really comes in handy when you're late and you can't find them in your purse.
The next phase of the cascade, biology, is where genuine contingency begins. It begins with ATP — the first moment where it could have gone another way, and didn't.
Each level of the cascade follows the same pattern because it is the same pattern:
Looking back with the bias of existence heavily tinting our glasses, each level looks like preparation. A designed feature delivered by a loving, gracious product manager.
Read as it happened though, each level is a kludge. A patch delivered directly to production at 2am because an engineer knew it would work well enough and wanted to get back to bed. And like any good kludge, it became load-bearing. The shingle patched to the barn roof in the middle of the storm that's there three years later because why wouldn't it be? It keeps the rain out doesn't it?
What follows is that pattern. Repeated. The names change, the complexity grows. The structure does not.
what you are about
to read will rhyme in a way
you might not expect
The gradient: Alkaline hydrothermal vents produce a pH difference of approximately five units across mineral micropores. Alkaline interior, acidic ocean. Geological heat dissipation produces this for free.
The dissipation: Protons flow down the gradient through mineral walls. In the presence of iron-sulfur surfaces and acetyl phosphate, this flow phosphorylates ADP as a side reaction. The vent does not need ATP. It is a byproduct of how protons find their way through mineral geometry.
The satisficing: ATP is not thermodynamically optimal as an energy currency. But ADP was present, acetyl phosphate was present, and iron catalyzed this specific reaction faster than alternatives. Available first, good enough. The system did not select ATP over GTP. It selected phosphoanhydride bond chemistry over everything else, then partitioned the work between two carriers by function. The monopoly is at the level of the bond, not the nucleotide.
The constraint on this level: Once purine NTP phosphate transfer chemistry dominates, it monopolises the activation energy landscape. No competing chemistry can enter the space. Other phosphorylation pathways cannot compete for substrates. The reaction network becomes decidable — no combinatorial explosion of competing energy currencies. ATP handles biosynthesis. GTP handles translation. Both are frozen accidents, locked in by active site conformation rather than energetic superiority. Neither has been displaced in four billion years. The routing table has two Tier 1 carriers, not one. The monopoly is at the level of the bond.
The composable waste: Purine NTP phosphate transfer chemistry. The bond energetics hit a sweet spot: energetic enough to drive condensation reactions, stable enough not to hydrolyze instantly. Two universal coupling agents, not because they are best, but because their particular chemistry is composable — and composable with each other.
All: Bub-bub-bubble, Bud-bud-buddies
All: Bub-bub-bubble, Bud-bud-buddies
Tony, Bobby & Monica: Bubble, bubble, bubble!
Shawn, Alastair & Sam: Buddy, buddy, buddies!
[Scene: the gang are at the vent factory, preparing for their shift]
[a horn sounds]
Tony: Where's Sam? She's going to be late. Shawn: Yeah, we've got to get out in that current. If we're late, we'll be out of phase all morning Bobby: I haven't seen her since the mall yesterday, she wandered off to Amino Shack to spend her birthday money Tony: Ewww, nerd alert! Hey ow! [Tony rubs his shoulder, which was suddenly sorer than he remembered it] Bobby: It's not nerd stuff you jerk! They had those new ATPods in, and she'd been saving up all year for them. She said she thought her Papa had given her an extra twenty, because he knew she was a little bilayer. Monica: Lets go guys, she'll have to meet us down there.
[moments later, as the gang are about to enter the current for their shift]
Sam: Hey guys! Check these out! Alastair: Whoa those are sweet dude. Tony: Yeah, totally jealous. We're stuck listening to whatever the old crust down by the vent puts on the radio and you get to take your tunes with you. Bobby: I can hardly wait for my birthday, I'm going to get ATPods too! Shawn: Me too! All: Me too!
All: Bub-bub-bubble, Bud-bud-buddies
All: Bub-bub-bubble, Bud-bud-buddies
Tony, Bobby & Monica: Bubble, bubble, bubble!
Shawn, Alastair & Sam: Buddy, buddy, buddies!
Bubble Puppy: Bubble Puppy!
The gradient: ATP provides activation energy for polymerization. Autocatalytic networks start running, processing available amino acids and sugars in both L and D forms.
The dissipation: Autocatalytic cycles preferentially amplify whichever enantiomer has a slight initial excess. The source of the initial asymmetry—meteoritic delivery, polarized light, mineral surface chirality—does not matter. The cycle consumes the minority enantiomer faster than it replenishes. Cross-catalytic feedback accelerates the imbalance.
The satisficing: L-amino acids and D-sugars are not chemically superior to their mirrors. If the initial fluctuation had gone the other way, mirror-life would work identically. The system did not optimize for L. It grabbed whatever excess was locally available and amplified it.
The constraint on this level: Chiral purity means the network only has to search half the combinatorial space of possible polymers. This is not a two-fold reduction. It is exponential. Every position in a polymer that could be L or D is now fixed. Autocatalysis without chiral purity is computationally intractable.
The composable waste: Consistent molecular handedness. Protein folding requires uniform chirality. Mixed-chirality polymers do not fold. The waste product of burning through a racemate is the precondition for coherent biochemistry.
[Scene: Bobby's studio apartment as he's getting ready for work]
Bobby rubbed his right hand. "Must be a storm coming in", he thought, his hand always hurt when the weather changed.
He thought back to his childhood.
[Scene: Our Holy Mother of Eve the Mitochondiral Academy for Gifted Bubbles]
Bobby: Ow! What was that for?
[rubbing his right hand, which until a moment ago had been holding his pen]
Sister Mary Catherine: New rules came down from the Head Master. Left hands only from now on.
Bobby: What do you mean only left hands from now on? I'm right handed, like my whole family.
Sister Mary Catherine: I'm sorry Bobby, I really am but the decision was made and we all have to learn to live with it. Left hands or we don't eat
[Scene: Back in Bobby's studio apartment as he's walking out the door. It is minimally furnished and his clothes lood threadbare and worn]
He'd learned to use his left hand as best he could, but he never really got the knack of it and he and his family had managed to just scrape by on what scraps they could find that they could eat, not much work available for a right handed bubble forced to mask to survive in a left handed world.
He guessed it was better than the olden days though. Things hadn't looked good back then, the left and right hands always competing for what jobs were available. Nothing ever really worked right and a lot of the factories in town were packing it in. "Investment capital is fickle", he thought, "they were almost ready to give up. I guess it was the right decision in the end. To bad it went the way it did".
The big polymer plants on the edge of town had really taken off in the last few years, the efficiency gains from a homogeneous workforce had seemingly enabled a whole new world of biochemical manufacturing.
Too bad Bobby and his family wouldn't be around to see it. He reached into his pocket and pulled out his phone. He had picture of his nephew Bobby Jr as his wallpaper, an action shot as his all-star goalie relation snagged a pick mid-air with his gloved right hand. It made him glad to know that a bit of random luck meant his family wouldn't be forgotten forever.
Something changes at the membrane. The first two levels are constraint accumulation in open solution. Chemistry happening to chemistry. There is no inside. There is no outside. There is no state being maintained against anything. ATP and homochirality are real constraints—they prune the combinatorial space of what chemistry can do—but there is no system doing the pruning. The filter operates on a solution. The solution does not know it is being filtered.
The membrane changes this. Before the lipid bilayer, there is no “in” to be different from “out.” No concentration gradient can be maintained because there is no container to maintain it in. Nothing can be wrong. Nothing can be perturbed and respond. There is no entity for a signal to matter to.
The moment there is a membrane, all of that changes. There is now something bounded enough to register a difference. An internal concentration that can deviate from external. A state that can be correct or incorrect relative to the system’s own continued existence. Something can go wrong. Something can respond to it going wrong.
For comparison, a coacervate has an inside. It does not have a state. The membrane is where inside acquires state — where the boundary becomes a register, not just a preference gradient. An exchange medium becomes a computer the moment its boundary can remember something. This is the minimum unit of computation: a distinction that makes a difference to something bounded enough to register it.
The membrane is not just another level in the cascade. It is where the cascade ignites. Everything before it is tethered computation — real, but bound to the gradient that powers it. Everything after it is autonomous computation — systems that carry their own power supply and maintain state on their own terms. The phase transition is not gradual. It is binary. Either there is a boundary or there is not. Beautifully fitting in a way, for what it marks. The distinction.
The one-bit membrane computer is the world's oldest mobile phone
"The one-bit membrane computer is the world's oldest mobile phone. Text messages were limited to one bit. The roaming charges were outrageous."
— God, during YCombinator 2, before unveiling his new invention, mitosis. He was asking for $100M in a Series A at an ungodly valuation
2026-03-01 · tech.lgbt/@graeme/116151787254560140
"There," he said, dropping the iron back on the vent. "That should do it."
— God, during YCombinator 1, finishing his Minimal Viable Conditions for the 1-bit computer to emerge
2026-03-03 · tech.lgbt/@graeme/116163384532978682
#physics #computerscience #biology #philsci #failfastfisix. Text messages were limited to one bit. The roaming charges were outrageous.
Draw a distinction and a universe comes into being -- Spencer Brown, Laws of Form
The gradient: Homochiral lipids in aqueous solution. Amphiphilic molecules with consistent geometry have a thermodynamic drive to self-assemble. Hydrophobic tails flee water, hydrophilic heads face it.
The dissipation: Self-assembly exports entropy. The lipids decrease their own entropy but increase water's entropy by releasing ordered water shells around hydrophobic surfaces. Two lipid chemistries solved this problem: ester-linked fatty acid chains and ether-linked isoprenoid chains.
The satisficing: Neither solution is globally optimal. Ester membranes are easier to synthesize but less stable at high temperatures. Ether membranes are more rigid and thermostable but costlier to build. Each was good enough in its local context. Two satisficing solutions, not one optimized one.
The constraint on this level: Once committed to ester or ether linkage, mixing is impossible. A functional half-ester, half-ether bilayer cannot exist. The membrane's biophysics becomes a binary choice, not a continuous parameter space. Compartment formation becomes reliable rather than stochastic.
The composable waste: Two distinct membrane architectures that cannot interoperate. The waste of having two solutions is a permanent fork. That fork is the bacteria/archaea split. All prokaryotic ecological diversity builds on this substrate.
[Scene: the dressing room after Bobby Jr's team has won a crucial playoff game]
Tommy: Dude, that was amazing. How did you stop that puck?
Bobby Jr: I don't know , I saw him look that way and I just kind of moved. Got lucky it stuck I guess, Mom always said I was a little short in the peptides.
Tommy: There's no way Sally is going to say no when you ask her to prom now , you're in there for sure!
Bobby Jr: I don't know man, it's like she doesn't even know I exist. It's this stupid phone, why did my mom get me an Etheroid? Every time I join a chat, everyone leaves and just starts a new one.
Tommy: Well, it does kind of screw things up when there's a green bubble in the chat.
Bobby Jr: I mean, it's bad enough that I've got to put up with these hand me down ATPods, but Etheroid? Really? It doesn't have even ester-chat.
Tommy: I'm sure you'll be fine dude, I mean you just won the game for us. No one cares that you don't have an e-Phone. One more win and we go on to finals. You make another save like that and Sally will let you fuse her vesicle for sure.
Bobby Jr: Maybe man, yeah. You know what? I'm going to do it, I'm going to ask her.
Tommy: Good! I heard her tell her friend Monica that she was going to be at the rink today to watch. They were giggling the whole time. She likes you, I know it.
[Bobby Jr finishes packing his equipment into his bag, he pulls his comically oversized zipper closed and stands as best as a lipid bubble can]
Tommy: Alight man, let's go get you a prom date!
[Scene: the arena lobby, where the hallway to the players dressing rooms; where the smell of stale sweat meets the smell of stale french fries]
Tommy: There she is dude, other there with Monica. She's smiling and they're coming this way!
Bobby Jr: Ok, wish me luck
[Sally, grinning cheek to cheek rushes over, arms extended]
Sally: Tommy! That was so cool!
Bobby Jr:...
The gradient: Photon flux from the sun, hitting cells that have already evolved anoxygenic photosynthesis using hydrogen sulfide or ferrous iron as electron donors.
The dissipation: Oxygenic photosynthesis uses water as an electron donor, releasing molecular oxygen as waste. For hundreds of millions of years, this oxygen was absorbed by dissolved iron in the oceans and reactive minerals on land. Eventually these sinks saturated. Oxygen accumulated in the atmosphere.
The satisficing: Water is a terrible electron donor. Its oxidation potential is much higher than hydrogen sulfide. Cyanobacteria did not switch to water because it is better. They switched because hydrogen sulfide and ferrous iron were getting locally scarce. Water was the satisficing fallback: unlimited supply, awful thermodynamics. Two photosystems linked in series were required to make it work. An engineering kludge.
The constraint on this level: Oxygen poisons the anaerobic pathways that were previously dominant. The search space collapses. Either solve oxygen tolerance or remain confined to anoxic niches. The waste actively reshapes the fitness landscape at its own level by killing off competitors.
The composable waste: Molecular oxygen. A strong oxidant. Any organism that evolves to use it as a terminal electron acceptor gets approximately eighteen times the ATP yield per glucose molecule. The waste's chemical identity—strong oxidant, gaseous, diffuses globally—determines exactly what kind of structure can crystallize from it.
[Scene: a line has formed outside of the vent factory, where the lunch wagon should be]
Bobby Jr: Where is that truck? I'm starving!
Tommy: I know man, I mean what kind of name is H2S2U if they never actually come to me? Ever since those new vent runoff regulations went in place, it seems like they're always out of stock
[Sam walks up from off camera, holding a paper bag with its logo partially obscured]
Sam: Whatcha guys up to?
Bobby Jr: Did you get take out from H2O4U again? I don't know how you can eat that stuff, it wrecks my insides and gives me such terrible gas.
Tommy: Yeah, don't remind me. I mean, Sally and I had to leave the window open for like a week after you left that one time we tried it. Hey! Ow!
[Tommy's arm was suddenly more sore than he thought it should be given the light nature of his joke, the membrane of his mind apparently more permeable than Bobby Jr's when it came to affairs of the heart]
Sam: You guys should really try it, they're never out of stock like that silly food truck, and I always have /so much more/ energy in the afternoons. I don't know what it is about this stuff, but it's great
Tommy: It's probably all that extra gas...
[Sam suddenly gains a burst of momentum, her bilayer belying her embarassment in both permeability and hue]
Sam: Ooh... excuse me. I guess I should get off to work, I'm suddenly feeling... mobile
The gradient: Oxygen is now globally available. Aerobic bacteria are producing energy surplus relative to their genomic needs. A prokaryotic cell can only use so much energy. Its surface-area-to-volume ratio limits how many genes it can support.
The dissipation: Aerobic bacteria produce more ATP than their genomes can spend. The surplus dissipates as heat, as wasted potential.
The satisficing: The engulfment was not a strategy. An archaeal cell ate a bacterium and failed to digest it. The decision to keep it was not a decision. It was the absence of a successful digestion. Satisficing at its most literal: not even good enough, just not fatal enough to stop.
The constraint on this level: Once the endosymbiont is internalized, the host's energy budget is no longer membrane-surface-limited, but the host is now dependent on the symbiont for ATP. That dependency constrains the host's metabolic computation. It cannot return to surface-based energetics. A ratchet.
The composable waste: Energy surplus per gene. The endosymbiont's ATP production, internalized, breaks the prokaryotic surface-area constraint. More energy per unit genome means more affordable genome. The waste of having an internal powerplant producing more than the original cell needed is the feedstock for genome expansion, nuclear compartmentalization, and the eukaryotic regulatory apparatus.
[Scene: a non-descript midsized corporate office tower. Bobby is sitting at his desk, his CEO nameplate reflecting the glare of the overhead flourescent lights. Tommy and Sam are sitting on the other side]
Tommy: Bobby, we need to talk about your Uncle Richmond.
Sam: Yeah, come on Bobby, we need to get rid of him. He's been living down in the server room for years and my team won't go anywhere near there. I've got five tickets in my backlog for failed drives, the replacements have been staged for weeks, but I can't get hands and feet to badge in because well... they're scared of him.
Bobby Jr: Scared of him? Why?
Tommy: Because of all of that thing he's got growing inside of him.
Bobby Jr: You know how important "Mother" has been to the company, we couldn't have built half of this without him. Remember when we started? Our MAU was barely keeping our investors off our back, they were going to pull the plug. If it wasn't for Uncle Richmond and "Mother", none of those new features we launched last quarter would be part of the platform.
Sam: You're right Bobby, we know. We still don't know how he managed to cram 16 times more pods onto the k8s cluster, and we're all thankful for it. It's just, can't we get him to... you know?
Bobby Jr: We've talked about this guys. He's literally powering the company, we can't just make him go away.
Tommy: He's not even a team player, he still won't give us access to that laptop he's always carrying around. He's started calling it his "Colonel's secret" blend.
Bobby Jr: You know what happened when we tried to run those out of the cloud account, the latency to Virgina killed each and every one of those 13 services and they're critical to keeping the platform up.
Sam: And you know what happens if we can't get those drives replaced, the whole system gets sick.
Bobby Jr: Sam, you know there's no version of this company without Uncle Richmond. We're just going to have to learn to live with him, he's infrastructure now.
The gradient: Large genomes with extensive regulatory networks. Gene duplication is rampant. Regulatory elements proliferate.
The dissipation: The genome produces more adhesion and signaling machinery than a single cell requires for its own purposes.
The satisficing: Cadherins—the adhesion molecules that make animal multicellularity possible—already existed in single-celled choanoflagellates, probably for prey capture or transient colony formation. They were not optimized for tissue building. They were co-opted. Approximately seventy percent of the adhesome was already present, doing something else.
The constraint on this level: Once cells commit to position-dependent fate, defection becomes increasingly costly. Genes for independent survival are lost or repurposed. The more specialized tissues become, the less any individual cell can compute independently. The computation is driven toward collective solutions.
The composable waste: Cells that stick together reliably. The exhaust of having too many adhesion proteins for a single-celled lifestyle is transient multicellular aggregates. Those aggregates are the feedstock for tissue differentiation. Once cells maintain position, cells can have different fates based on position.
[Scene: Bobby Jr's son Bobby III is in his dorm room, furiously pounding away at his keyboard. His roommate Justin enters]
Justin: What's that?
Bobby III: You like it? I'm calling it "The Flagellabook".
Justin: "The Flagellabook?" You mean like those paper directories those other dorms are putting up?
Bobby III: Yeah, I wrote a bit of PHP and scraped all of their sites, dumped the images into MySQL and then built a web site for them. Check this out
[Bobby III turns his lappop around, showing his roommate a simple page with the header "Heads or Tails" and two pictures of a bubble that Justin thought he recognized from his Psych 101 class]
Justin: Is that even legal? I mean I think I know her and she'd be furious if she knew you'd put her up on a website with the description "Long hydrocarbon tails, kinked where there are unsaturated bonds, writhing past each other in constant lateral motion" and asked people to rate her sheen like it's some sort of phase diagram.
Bobby III: What? That's right off her lab yearbook page
Justin: I don't know man, it just seems a bit slimy, even for us
[Five years later]
Bobby III: C'mon man. This was our dream
Justin: This was your dream, not mine. I mean look at that.
[A television in the corner is turned to BNN as a news report on the Congressional investigation into Mito, as the company was now called]
BNN Exclusive :: Congress Investigates Mito Over Allegations of Illegal User Retention Practices
Justin: And you know what they're saying about how social media becomes a crutch. A whole generation won't even go outside alone anymore, they're all saying they "don't feel real" unless they're part of the crowd. They're calling it "multi-cellular life". Multi-cellular! Remember when we were kids? No one even talked about that kind of lifestyle, let alone dreamed of living it out in the open.
Bobby III: This is the future man, and we own it. I mean, look at what we've built here. Once you're on Flagellabook, you're someone man. You have an identity, a place in the network, people follow you...
[Bobby III drifted off, remembering how his own upbringing had been shaped by his father's feelings of loneliness and rejection, and his vows never to let his life fall that way]
The gradient: Multicellular organisms with gene regulatory networks. Signaling molecules—Wnts, Hedgehog, TGF-β—are being produced as part of normal cell-cell communication.
The dissipation: The genome overproduces regulatory elements. More signaling pathways and transcription factors than needed for simple body plans.
The satisficing: Hox genes probably originated as simple positional markers along a body axis. They were not designed as a morphological programming language. They happened to be interpretable as one once tissues had enough cell types to respond differentially.
The constraint on this level: The toolkit limits the space of possible body plans. After the Cambrian explosion, no new phyla appear in the fossil record. Development works within toolkit grammar. A fly embryo does not randomly explore morphospace. It executes a constrained program that converges. This makes development reliable.
The composable waste: Regulatory excess. The Cambrian explosion runs on toolkit overshoot, not toolkit invention. A finite set of modular body-plan elements—segments, appendages, axes—that can be recombined. The toolkit is simultaneously the programming language, the constraint on what programs can be written, and the compiler output that the next level takes as input.
[Scene: {5 years ago} /p/programming on Poppit, a popular social aggregator, is discussing a post on H/Oxide a new language that's been gaining traction in certain maker circles]
EagerBeaver68+1: So why are we talking about this thing again? It's just a mashup of parts. I mean look at it, the ownership model comes from linear type theory. It's traits are just Haskall but worse and it's decided that Scheme of all places is where we should be stealing the idea of macros? I mean let me guess, it doesn't even do garbage collection does it?
YourMommaWasRight: Uh... should we tell him?
EagerBeaver68+1: Tell me what?
YourMommaWasRight: I wrote ls in it
MLPFan411: Not interested at all, it's just another language thrown together from available parts, trying to get in on the systems programming resurgance. There's nothing novel here at all
[Scene: {current day} ]
Bobby IV: Hey yo, hit me up on Wallsap later
Phil: Sure thing, send me that pull when you're done. That new ECS is going to make this the best bubble popping roguelike since the original Bubble Bobble, I can't believe how easy it is to build in H/Oxide
Bobby IV: Yeah, I don't know how the old DullSheens used to do it, memory management in Sea++ is a pain, why should I have to tell the compiler when I'm done with something? Can't it tell I'm never going to use it again?
Phil: I know right? I mean look how much we're getting done these days and all the parts for H/Oxide were just sitting there, just took a bit of outside the bubble thinking to put it all together. We've got it made now... I created three versions of ls just this week!
Bobby IV: We should go back and rewrite all of that old stuff, I mean it was OK back in the olden days like when my Dad was building Mito to have to carefully manage memory, but we've moved on since then
Phil: Move fast and break stuff right?
Bobby IV: Alright man, I've gotta run. I'll catch you later. I'm headed over to Sammie's house. She and her mom were working on a PR for the Linux maintainers that replaced /dev/null with a H/Oxide version, completely memory safe and had like a 400x speedup over the legacy version
Phil: Wait, Sammie? As in Sammie "My Great Grandmother Once Farted So Bad it Ended Life as We Know It?" Bubbleson? You know her?
Bobby IV: Yeah, she and my grandfather used to work together
Phil: For real? That's super cool man, is there anything H/Oxide can't do?
The gradient: The developmental toolkit specifying cell fates at tissue boundaries. The neural plate/ectoderm boundary is one such region.
The dissipation: Cells at the boundary between two tissue specifications receive conflicting signals. They undergo epithelial-to-mesenchymal transition and leave.
The satisficing: Neural crest cells are a developmental error that worked. They are migratory because they do not fit where they are. Their pluripotency is a consequence of receiving mixed fate signals, not a designed feature.
The constraint on this level: Neural crest cells can only arise at neural plate boundaries, can only respond to signals present along their migration routes, and can only differentiate into the fates their gene regulatory network permits. The computation is conditional logic: if position X and signal Y, become cell type Z.
The composable waste: Migratory pluripotent cells. The exhaust of ambiguous boundary specification is a population of cells that can go anywhere and become almost anything. Jaws, faces, peripheral nerves, pigment. The vertebrate head is built from developmental boundary noise.
[Scene: a medium sized office tower in a low density part of town. Four stories of a local insurance firm grounds the building in actuarial mathematics before the speculative begins. The fifth and sixth floors of the six story building have just been rented by "CrestCo: a Division of Neural Industries", a small hand lettered sign announces at the exit from the elevator on the fifth floor]
Bobby V: Hi, I'm Bobby. Mr Bubbler said to report to security on my first day, so here I am
Officer Bubbles: Hi Bobby, I'm Officer Bubbles. If you'd just look in here...
FLASH
Officer Bubbles: Now, wear this badge and this hard hat at all times
Bobby V: Hard hat?
Officer Bubbles: Yeah, do you hear all that noise?
[Bobby appears like as though he could in fact hear all that noise]
Officer Bubbles: There's always a bit of money left in the budget every year, and you know what they say... The always seem to spend it on construction. Would you believe this was a 5 story building last year?
Bobby V: Wow. This is going to be an amazing company to work for
[Scene: a medium sized office tower in a low density part of town. Four stories of a local insurance firm grounds the building in actuarial mathematics before the speculative begins. The fifth through seventh floors of the seven story building have been rented by "CrestCo: a Division of Neural Industries", a small wooden sign announces at the exit from the elevator on the fifth floor]
All of Bobby's colleagues and co-workers and the one guy who dropped in at a trust fall at the retreat last year: "...Happy work aniversary... to... you!!!"
[Bobby thought it was a bit odd that they'd developed an entire 90 minute song and dance production to the theme of Happy Birthday, but the job paid well and the idiosyncrasies where mainly charming]
Bobby's Boss: Congratulations for sticking around a whole year! We're really glad to have you on board.
Bobby V: Thanks. Hey, what's all that banging going on upstairs?
Bobby's Boss: Oh you know, there was a bit of money left in the budget so we're just sprucing up the place a bit
[Scene: a medium sized office tower in a low density part of town. Four stories of a local insurance firm grounds the building in actuarial mathematics before the speculative begins. The fifth through ninth floors of the nine story building have been rented by "CrestCo: a Division of Neural Industries", a large gold plated sign announces at the exit from the elevator on the fifth floor]
Bobby's Boss: Hey, can you head up to the new data centre on the ninth floor?
Bobby V: Wait, we have a ninth floor now? And they put a data centre up there? Don't those normally go on the basement?
Bobby's Boss: That's what I said but I was overruled. Something about too many shocks going on down there or something and a concussion protocol or something. I dunno, I had a headache and was having a hard time concentrating that day
Bobby V: What's all that banging going on?
Bobby's Boss: Oh you know, there was a bit of money left in the budget so we're just sprucing up the place a bit
[Scene: a large office tower in a high density part of town. Four stories of a local insurance firm grounds the building in actuarial mathematics before the speculative begins. The fifth through forty-second floors of the forty-two story building have been rented by "CrestCo: a Division of Neural Industries", a large neon sign announces at the exit from the elevator on the fifth floor]
Bobby V: So back in, what was it? 92 or 93? Whatever year it was, it was right between that time we got that "smart office" system
Bobby's Administrative Assistant: 94 I think sir, 93 was the year we painted the building
Bobby V: Right, 94 then. A nervous system for your office they called it, just seemed like a pain in the ass to me. We'd gotten by all that long without having to know what was going on on the lower floors pretty well, it was just so much noise at first. None of it was really planned you see... there just always seemed to be a "bit left over" every year and we just thought we'd invest it back into the company. And look at ua now...
[Scene: Bobby walks over to one of the two massive windows that open high over the front of the bulding from the penthouse level where the C-Suite lived and all of the executive functions took place]
Bobby V: We've come a long way, my family and me. And look what we've built, all of this. I can hardly believe it at times, I mean I don't think any of us planned it, we were mostly just trying get on with things. Old Great-Great-Grandpa Bobby was just trying to impress some girl. We barely survived the early years, not much to eat back then. And then we got lucky, a few of us latched on to something and it just grew and grew. Pretty soon all kinds of good ideas were just crawling out of the woodworks, and a few stuck. Now everything is built from what we've helped created and we can sit way up here and enjoy the view. We've earned it I think, but not from any particular bit of brilliance. No, we've earned our place here by sheer perserverence and determination. Just a bunch of Bobby's out here holding on, trying to be the best Bobby we can.
Bobby just compressed five generations, eight phase transitions, and four billion years of contingency into a monologue delivered from behind two windows he didn't budget for, in a building nobody planned, on top of an insurance firm that's still doing actuarial math on the ground floor. He did this without noticing that his final contribution to our story, his compression, was the latest waste product.
For Bobby, a penthouse view is not a reward but yet another stop of a series of lives spent in service to building accidental structure. The compression is but the exhaust of a nervous system with more capacity than mere survival requires, able to dissipate its surplus as narrative.
Bobby's story does not stop at the head, it cannot stop, for the head contains its own surplus.
At each level of the cascade, the waste product plays dual roles. It collapses the local search space to a size that admits stable solutions. And it constitutes the typed initial conditions for the next level's search, two projections of the same substrate.
Without the constraint, the computation at that level does not converge. Autocatalytic networks in a racemic mixture cannot find stable polymer attractors—the search space is exponentially too large. Endosymbiotic hosts without the ratchet of ATP dependency would revert to surface-limited energetics whenever the symbiont was metabolically costly. Neural crest cells receiving unambiguous fate signals would stay put, differentiate in place, and the vertebrate head would not exist. In each case, the waste that closes paths for descendants is the same constraint that made this level's computation finishable.
The cascade does not work because each level produces useful waste. It works because each level's waste makes its own problem solvable, and the solution happens to be the feedstock the next level's problem requires. Tractability here and feedstock for the next level are the same product viewed from different ends of the pipeline.
| Tier | Process | Fixed point | Satisficing | Waste/Constraint | Output |
|---|---|---|---|---|---|
| Chemistry | Vent proton flux | ATP synthesis | Available first, good enough | Monopolized activation landscape | Universal coupling agent |
| Chirality | Autocatalytic networks | Homochiral polymers | Whichever hand was locally excess | Exponential search collapsed | Foldable biochemistry |
| Boundary | Amphiphilic self-assembly | Membrane architecture | Two solutions, neither optimal | Binary commitment | Bacteria/archaea fork |
| Oxygenation | Photosynthetic chemistry | Aerobic metabolism | Awful thermodynamics, unlimited supply | Anaerobic extinction | High-yield respiration |
| Complexity | Endosymbiotic integration | Eukaryotic cell | Not fatal enough to stop | Energy dependency | Genome expansion |
| Multicellularity | Adhesion networks | Tissue organization | Already present, co-opted | Commitment cost | Division of labor |
| Development | Regulatory networks | Body plan grammar | Positional markers reinterpreted | Morphospace limits | Modular elements |
| Anatomy | Boundary specification | Neural crest | Migratory because they didn't fit | Migration constraints | Vertebrate head |
| Representation | Neural surplus | Self-model | More capacity than survival requires | Narrative compulsion | You are reading this |
Each row's waste constrains its own computation and feeds the next row's search. The last row is the current state of the cascade, observable from the inside, which is the only place it can be observed from.