I read through it. You are correct that I am wrong in the way I stated the left-right dominance in my sentence.
Basically left and right hemispheres DO have different functions. For example language modules, contextual, logic, holistic, descriptive, closer link to emotion/limbic system, etc. Oh and not to mention the obvious example that they each control their own (opposite) side of the body!
Everyone uses both sides. Some people are simply more attuned to a certain hemisphere and can have the other one underdeveloped (Stuart is a good example of this in part 2, section 2 of Mindsight)

Anyway thanks for the read! Back to Muse stuff ^^