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To be fair to silicon, the human brain is very similar. It's never 100% active but at one time or another it all gets used.

• swombat 13y ago
  To be fair, we have absolutely no idea how the human brain functions, and whether the analogy with silicon is relevant at all... Some have posited that consciousness is a function of a wave-like property of the entire brain, for example. That may be a load of bollocks, but the reality remains that we don't know much about how the brain does its magic.
  • Symmetry 13y ago
    We don't know how it works in detail but we can see which parts of the brain are doing stuff at any given time, and we've had a lot of progress associating different functions with different areas of the brain. http://en.wikipedia.org/wiki/Functional_magnetic_resonance_imaging http://en.wikipedia.org/wiki/Functional_magnetic_resonance_i...
    • swombat 13y ago
      No, we can detect changes in blood flow, and we've posited that there's a correlation between this blood flow and brain activity, and found that that is consistent with the way the blood flows alter. This does not in any way rule out that the parts of the brain that are not showing up in the fMRI are participating in the thinking process at that moment. We have no idea whatsoever of how the thinking process itself unfolds.