William Lane Craig denies the number zero.

[Mister Agenda]

Would something like this count as evidence that concepts exist in our brains?

http://www.livescience.com/53535-compute...ously.html

That shows that concepts are symbolically represented in the brain something I've never opposed.

Could you be more specific about what evidence, if it existed, you would find persuasive that concepts are actually in people's brains?

I would examples of concepts forming sans brain or computational mechanism persuasive evidence that concepts are only represented in the brain rather than constructed by them.