From snopes:

"Some versions of this piece are entitled "Obama's college roommate speaks out", but that heading reflects a misreading of the word "classmate", as Wayne Allen Root never was (or claimed to be) Barack Obama's roommate. Wayne Allen Root merely attend Columbia University at the same time as Barack Obama did (and later claimed that niether he nor anyone he knew was familiar with Barack Obama at Columbia University)"

Since Columbia University has over 20,000 students, what exactly are trying to imply by your post? I sure hope that isn't that Mr Root has inside knowledge of how Barack Obama thinks. Unless he performs mental telepathy that is.