Sync

no leader. no signal. watch them agree.

200 fireflies, one dumb rule each — spontaneous unison

Two hundred fireflies with no leader and no shared clock, each one only nudging its own rhythm slightly toward whatever’s blinking nearby, end up flashing in unison anyway — a synchrony nobody organized. The same simple rule, small mutual nudges, is what keeps the pacemaker cells in a real heart beating together.

Concepts: synchronization, emergence.

An interactive you play with one thumb, on Wundr.