Exhibition · Series XI · Computation Itself
Signals Have a Cone
How far can one local difference travel under a local rule?
What to notice
Two runs differ at one cell. Because the update rule is local, the difference can only spread outward at a bounded rate, creating a visible causal cone inside the computation.
Everyday analogy. If a message can only pass from one neighbor to the next, it cannot reach the tenth house instantly. Local communication creates a hard limit on how quickly one change can influence distant places.
Pre-rendered from a finite elementary cellular-automaton execution. No intermediate state is fabricated.