The "there is no truth" excuse from evolutinists. How boring. Of course the natural sciences give proof of their assumptions: the atom bomb, space travel, the steam engine, the tv set, are proof of some of the many theories of natural science, so are medicines and almost all the great advances of the 20th century. Evolution cannot give proof because it is not a science.
uh huh. Could you point me to the proof of the theory of gravity?
You can't do it, because there is no such proof anywhere in the literature. All you have is repeated observation that improves you confidence in theories. You have high confidence in all these things you've listed, from repeated observation. But that is induction, which has no formal underpinnings in logic. Proofs are performed using logical deduction. Where, to repeat myself, is your proof of the theory of gravity?
1) You're using 'proof' in a nonstandard way; the atom bomb is not a proof of nuclear physics in the same sense that Pythagoras proved his theorem.
2) The fact of identical point mutations found in people and chimps constitutes a true prediction made by evolution science. What are the predictions made by the other theories and how have they stood up to tests?