On 8/7/2016 11:20 AM, Bruno Marchal wrote:
Not necessarily. A digital computer also requires that time be
digitized so that its registers run synchronously. Otherwise "the
state" is ill defined. The finite speed of light means that
spacially separated regions cannot be synchronous. Even if neurons
were only ON or OFF, which they aren't, they have frequency
modulation, they are not synchronous.
Synchronous digital machine can emulate asynchronous digital machine,
and that is all what is needed for the reasoning.
If the time variable is continuous, i.e. can't be digitized, I don't
think you are correct.
Brent
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