Simon Baron-Cohen says research shows that when babies are born they pursue two tasks. The first is to make sense of the material world they live in. Baron-Cohen calls that S-type thought for systemising. And they are also driven to understand other people because we are social animals. Baron-Cohen calls that E-type thought for empathising. For evolutionary reasons, he thinks that boys are slightly more inclined to S-type thought and girls to E-type thought.