Similarly thought is a system. That system not only includes thought and feelings but it includes the state of the body it includes the whole of society - as thought is passing back and forth between people in a process by which thought evolved from ancient times.
As an actor it's more interesting to play a nerd than anything else. It's a lot more fun - you don't worry about 'what's my hair like?' in the morning or 'which is my great angle?'
