| Dynamical experiments have revealed a variety of behaviors that can be divided into
four classes: |
1. The screen goes blank. |
2. A single blob, stationary or pulsating, appears. |
3. Blobs of light swirl around in a seemingly unorganized way,
never appearing to repeat. |
4. An organized pattern of blobs appears to grow, shrink, and evolve. |
| These classes are similar to, perhaps identical to, the
Wolfram classes of cellular automata. |
| Class 3 behavior can be compared to chaos. |
It is deterministic (no randomness is built into the experiment),
but cannot be predicted over long times. |
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| Class 4 behavior is an example of what we shall call
complex. |
It is self-organizing, contains islands of order, and yet exhibits
long-range correlations. |
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