This is a big problem for you. Much of what follows also seems incoherent. I don’t see how either mechanical engineers or physicists have much to say about “fundamental principles of life”, though that would depend on what you think are fundamental principles. The question is whether biochemists have much to say about evolutionary biology. You are not equipped to know, of course. But I am.
Feynman didn’t solve the shuttle mystery because he was a physicist. He solved it because he could reason and because he had the wit to try a simple experiment. Why none of the engineers who had worked on the shuttle figured it out is another mystery. At any rate, that story has no application to the current case. He doesn’t understand evolutionary biology; evolutionary biologists do. That’s all.