Six compute functions, shown not told
The Catalogue names the kind of computation at work in each system. Some of those functions are easier to see than to define. Below are six of the most common — each an abstract sketch of the mechanism itself, not the thing it runs in. Click any panel to run it.
e.g. a thermostat, sweating, a beating heart
A system measures the gap between where it is and where it should be, then corrects — overshooting, sensing the new error, correcting again, until it settles on the set-point. The wobble is the computation: each correction is a reading of its own last result.
e.g. a river, an ant colony, lightning
Many routes are tried, faintly; the cheaper ones are reinforced and the wasteful ones fade, until a single efficient path remains. No router plans it — the path is computed by the trials themselves, the good ones surviving.
e.g. a star, acid meeting base, a see-saw
Opposing pressures push until they cancel. The system swings, overshoots, swings back with less force each time, and converges on the point where the forces balance. That resting point is the answer it was computing.
e.g. a neuron, a volcano, a dividing cell
Something accumulates quietly — charge, pressure, signal — doing nothing visible until it crosses a line. Then, all at once, it fires. The computation is a comparison run continuously: is the total over the limit yet?
e.g. a starling murmuration, a school of fish, a city
Each agent follows only its neighbours — match their heading, keep close, don't collide. No one directs the whole, yet a single coherent shape forms and moves. The pattern is computed by everyone at once, and by no one in particular.
e.g. a folding protein, a water droplet, a snowflake
Left alone, a system rolls toward its lowest-energy state, the way a ball settles into the deepest reachable valley. The final shape isn't designed — it's whatever costs the least to hold. Finding that low point is the computation.
Six sketches, one lesson: in every case the answer is not looked up or handed down — it is arrived at, by the process running itself forward. That arriving is what the Autoverse means by computation.
