Captivity?

In regards to absolute "proof"-Its not really possible except in Mathematics.

If there were a shred of pure evidence in Creationism, the world would be a vastly different place. Unfortunately, there are hundreds of creation myths, each believed as truth by its constituents, and many find it difficult to believe in one over the other, due to a lack of evidence. However, just because I believe there is a god, doesn't mean I have to believe in any creation theory.

If there were a way to purely Prove evolution, there would be no discussion.
You can see all the fossil records which show a logical progression between eohippus and the modern horse (and tens of other examples which show "full" progression) and still say it doesn't prove anything because they are all different species.

My point is that there is no definitive proof either way.