Cascade
One small thing, enormous consequences.
Three ways the world does it — threshold, criticality, cascade. Each one is a live simulation you drive yourself, and a plot built from your own runs.
01 Forest fire Below a line a spark fizzles. A hair past it, the same spark takes everything. → 02 Sandpile Nobody set this dial. The pile loads itself to its own edge — and then one grain can move anything. → 03 Power grid Take out any node and the grid holds. One node — no different to look at — takes the whole thing down. →