Another support for evolutionary fitness

From NY Times' ideas of the year: Empty Intelligence:

Based on the experiments with mice, scientists find out that the hungry mice are smarter and sharper, and they suspect that this is also true for human beings.

“When you are hungry, you need to focus your entire system on finding food in the environment.” In fact, some biologists believe that human intelligence itself evolved because it made early hominids more effective hunters, gathers and foragers.

Facing the LSAT, a final exam or a half-day job interview? Go in mildly hungry, not carbo-loaded for endurance, and snack to maintain that edgy state.

I will find out soon how I did in last night's exam: I was quite hungry walking into the classrom.