What does 'experience is a comb which nature gives us when we are bald' mean?

Experience is something that would help us solve life problems, but by the time a human has obtained experience, they have made it through those problems. By the time a person gains experience, they no longer have use of the knowledge that it brings. Similarly, if you give a bald man a comb, he cannot use it. He would be happier if you had given it to him before he lost his hair.