It's a good exercise in explaining your thoughts to others as well as being critical of your own ideas. Only idiots don't monitor their own thoughts. I enjoy the quote of "By all means have an open mind but not so open that your brains fall out." You should have an open mind, but you should also have a filter going on for both incoming and outgoing thoughts.
"Really?"
"or, not like-like, but ya know"
I know
I know what ur talking about