How can you possible know someone else?

You don't know what they think or feel all the time.  You don't know their innermost thoughts.  This leads me to the premise that I am the worst person I know.  Because I most certainly don't know you.  Thus accounts for my very low self-esteem, even though I may seem like I have a very high image of myself, and in some cases I do, but in most cases I don't, if that makes sense.  Wow.  That's a really short post.  Congratulations go to being straightforward.
~another musing of the ill-informed~