Good Enough: The Tolerance for Mediocrity in Nature and Society

In this spirited and irreverent critique of Darwin’s long hold over our imagination, a distinguished philosopher of science makes the case that, in culture as well as nature, not only the fittest survive: the world is full of the “good enough” that persist too.

Why is the genome of a salamander forty times larger than that of a human? Why does the avocado tree produce a million flowers and only a hundred fruits? Why, in short, is there so much waste in nature? In this lively and wide-ranging...