On Tue, May 10, 2011 at 12:12:04PM -0400, Mathieu Bouchard wrote:
It doesn't mean that those artifacts don't exist in the physical world, it means that we had to invent those concepts by ourselves because we can't perceive them from the physical world.
At the very least they exist physically encoded in the brain chemistry of somebody who is thinking about those concepts. Brains are part of physical reality, right?
Cheers,
Chris.