Neurons and Signals · Brain
The gap between neurons — where the real computing happens.
Neurons almost never touch. Where one ends and the next begins there's a tiny gap, and the signal has to be converted into a chemical, released, and caught on the other side — the same trick you met at the muscle in the last module.
That gap is a synapse, and it's the reason brains can learn. A connection that gets used repeatedly grows stronger; one that goes unused fades. If neurons were simply hard-wired together, experience could never change anything.
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