by Snowstar on Thu Aug 19, 2010 2:45 pm
Our brains started shrinking about 20,000 years ago, even compared to our body mass, and have only started getting bigger again after the Middle Ages because we started getting larger due to better nutrition.
And the reason corvids (ravens, crows, jays, etc.) haven't been recognized to be as smart as they truly are (also, applies to a lot of other animals) is because our tests of intelligence don't really show how smart the animal is in its own enviroment. Don't we all have trouble finding our way through a new place and getting used to a new routine- such as, at a new school?