the big question
"Saying you know someone is a lie."
I think what we end up knowing are a person's habits, their routines, when we know what they're going to do before they do it we think we know them, when all we really know is how to identify repetition.
As I said in Trace's comments, it is entirely possible to know someone as good as they know themselves, but no one is that forthcoming, and few of us - if any - are that open to the reception.
I would like to perform a test, pull one of the deep dark secrets from the vaults and air it out, see how many people flee from the pungent odor, see how many stick around but never forget the smell, see if anyone actually remains unaffected. I would like to, but I won't, because I'm scared to death.