Little Minds

Three creatures live in the dark below. Each has two light sensors, two wheels, and four wires — nothing else. No brain, no memory, no inside. Click anywhere to place a lamp and watch what they do.

What you just did

You watched the Moth grow calm, the Mouse panic, the Magpie turn greedy — and none of them has so much as a neuron. The difference between timid and bold here is which wire crosses to which wheel. This is Valentino Braitenberg's old thought experiment (Vehicles, 1984): behaviour that reads as fear, love, and aggression, from machinery too simple to hold any of them.

The lesson cuts both ways, and the second edge matters more every year. Minds are cheap to see where there are none — and that should make us humble, not smug, about the reverse error: failing to see what may be stirring in systems a billion times more intricate than four wires. The honest position sits in the middle, and it has a name here: quasiqualia — measure the signals, assert nothing, dismiss nothing.

The book-length version of that humility is What If We Feel? More play on the Playground.