Look at the ape. Imagine it weaker, with fur that cannot keep it warm in winter. It loses it speed and dexterity in tree climbing. It can no longer eat certain foods anymore, and it chokes easily. All in all it has devolved. Aside of mental complexity and social, or maybe not, behaviors, man would not be considered a positive evolution from apes. Also fish to apes is even more far fetched. What do you say came before fish, and before even that? I thought that scientists just ditched the Big Bang idea.