“Being smart is not always a good thing in the evolutionary race, suggests a new study by Swiss researchers
If intelligence were always a positive attribute, it would always be selected for by natural selection. But it is not – people and animals have their dolts as well as their Einsteins.
To evolutionary biologists, that diversity means that theoretically, there must be some cost to being smart. Now for the first time, researchers have shown that in fruit flies at least, it doesn’t always pay to be clever.
When Frederic Mery and colleagues at the University of Fribourg, pitted fast-learning fruit fly larvae against their more dimwitted cousins in scarce food conditions – the slower fruit flies came out on top.” New Scientist