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Computation in CA: Signals
Let's take a step back and consider how computation occurs in CA
By first reminding ourselves of the different categories of persistent patterns.
We've already made mention of the reflex glider.
Gliders are motile patterns. Larger ones are sometimes called spaceships.
In terms of computation, gliders play the role of translating signals from one place to another.
The reflex glider in Conway's Life (B3S23).