[Google]

That my friend is not true. People with schizophrenia have a serious issue with their brains and how it relays information to them often causing them to hear voices that aren't there, having split personalities, and violent tendencies.

Also the myth we only use 10 percent of our brain is also false if you want read this: http://answers.yahoo.com/question/index?...208AATU95X

Just something fast I pulled up you can do lots of research into this.

Know mate, I meant of space for knowledges.
Not of using the brain.
We are just usig around 3-4 of the knowledge base we have.