On 9/20/2012 11:02 AM, Craig Weinberg wrote:
Here's another reductio ad absurdum illustration of comp.

If the version of comp we are discussing here is independent of physics, then shouldn't it be possible for us to program universal machines using only empty space? Length can be quantified, so why can't we just use millimeters or Planck lengths as the basis for our enumeration, addition, and multiplication and directly program from our mind to space?

Of course, it would be hard to know where it was because we would be constantly flying away from a space that was anchored to an absolute position independent of Earth, the solar system, Milky Way, etc, but that shouldn't matter anyhow since whatever method we use to directly program in empty space with our minds should also give us access to the results of the computations.

What do you think? Just as wafers of silicon glass could in theory be functionally identical to a living brain, wouldn't it be equally prejudiced to say that empty space isn't good enough to host the computations of silicon?


Hey Craig,

What do you think physical computers actually are? "universal machines using only empty space". But Nature hates a vacuum...




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