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 - Hypothesis: what you see with your eyes closed, the lights you can see in the dark -- that is not random noise, it is computation.
   - The visual cortex may be used to compute arbitrary programs given the passage of time: an image can encode a spectrogram, for example, and pattern recognition applied to shapes in the spectrogram may yield at least some useful sound information (given the "right" neural networks)
+  - Arbitrary programs could be stored and replayed in the visual cortex by e.g. evolving cellular automata or a neural network that can simulate them, which would mean universal computation as per Wolfram et al