My my, what did I start with my rebuttal, see A rebuttal to “Who was Cain’s wife?”. How did physics get into the discussion? How did time enter the discussion? There are at least three aspects of time, probably more. There is relativistic, Einsteinian, time, quantum time and classical Newtonian time. There are also two forms of evolution, physical evolution, the evolution of the universe and biological evolution, the evolution of flora and fauna on earth.
When we discuss human evolution, our discussion should be limited to classical time and biology. I’ll redefine my preposition. With the rise of mankind a third form of evolution arose within man, intellectual evolution. Humans are still subject to biological evolution however, intellectual evolution moves mankind at a much faster pace and allows humans to rise above and dominate nature. It may even allow humans to circumvent nature and biological evolution. It is improbable that any other earthly species will rise to compete with or replace humans. UNLESS humans disappear as the dinosaurs did.
Is it possible that any natural catastrophe can cause mankind to disappear? Can mankind cause his own downfall? Man is a very adaptable animal and I find it hard to conceive of his disappearance. Therefore, man will continue to dominate the earth until physical evolution makes the earth uninhabitable and by that time mankind may have gone into space.