Whales, obviously, evolved from land mammals. But did they achieve this feat via a blind process of random variation and natural selection?
Mathematician David Berlinski doubts it:
To my mind, the jaw-dropping informational complexity of life is the strict Darwinian naturalist’s Achilles’ heel. Life on earth is about three billion years old, and all organisms share a common ancestor, but it’s by no means obvious that the differences among organisms can be accounted for by invoking this singular overarching principle: random variation accompanied by natural selection.
Something more seems to be going on.