There is no good reason to assume that human intelligence evolved from mud to mind via a long slow history.
The breaking of the conserved number of cervical vertebrae is hard to reconcile with an unguided evolutionary mechanism.
What you’d expect is humans more or less on the level of animals — not greatly exceeding them in evil, or greatly transcending them in good.
Thinking about all the species of animals, birds, and fishes, it becomes apparent that each one requires a certain type of food, suitable for its anatomy.
The coagulation cascade cannot evolve unless there is simultaneously a mechanism in hand for controlling it. Both would have to arise at the same time.