Fieldwork in Prehistory

By MARY ANDOM

Neanderthals just aren't what they used to be.

A popular series of Geico commercials mocks political correctness by placing the cave men in the present as hairy, swollen-browed guys who are sensitive about the company's speciesist ad campaign. The commercials inspired a new ABC comedy, Cavemen, that extends the joke into half-hour episodes.

But...