Don’t judge a book by its cover – but what about people? Why you can go ahead and judge a little...

The phrase “don’t judge a book by its cover” isn't always good advice. 

As a matter of fact, our good and bad judgment serves a purpose. While it’s not always spot on, our instinct can often point us in the right direction or give us pause when something’s not right.

The cover of a book may be deceiving but studies have found that the cover of most people will give you some sense of who they are. One study even found that women could successfully determine which men would make good fathers just by looking at them. It's not rocket science... generally speaking, nice people tend to look nice while nasty people tend to look nasty.