The vitamin C mutation is shared by the great apes. If you deny evolution, you are faced with the implausible coincidence that chimpanzees, gorillas and humans suffered exact the same mutation in exactly the same gene at exactly the same place.
I don't know everything, but I do know that if three similar species had exactly the same mutation in the same place in their genomes, odds are it was one mutation in a common ancestor of all three.
Danger Will Robinson, Tautology alert, tautology alert!
Not at all. if you ask me the probability that you exist, i say it's 1.0; because, after all, you do.
You should take up bridge. In bridge, even if only a miracle lie of the cards can let you win the hand, you play that lie, because after all, what's the point in losing by the most probable method? Likewise, all your probability calculations have to, in the end, consider the fact that you do in fact exist.
Those genes in all the same species could have all been designed...neither you or I have any way of knowing whether it was a mutation or designed. Which do you think is more likely?