In humans the left hemisphere is designed for grasping, controls the right hand with which we grasp (as well as those aspects of language which enable us to say we have ‘grasped’ something – pinned it down) and helps us manipulate, rather than understand, the world. It sees little, but what it does see seems clear. It is confident, tends to be black and white in its judgments, and jumps to conclusions. Since it is serving the predator in us, it has to if it is to succeed.
