I've been trying to find the page, but for some reason the search button doesn't find it, but I think I have another entry.
It seems as if humans (ok, and guinea pigs) are somewhat unique in that they cannot manufacture their own Vit C from glucose. Ofcourse, without Vit C, nasty things happen. So, if we are designed, it seems like one hell of a flaw, especially when you consider that we were created/designed after creatures that can manufacture their own Vit C.
What thinkest thou?