Actually Fuckhead all it takes to sue someone for slander is saying something that you can't prove.
Goodness me, much anger, many vitriol. Unfortunately, while you might be full of spite and hatred for me, you're still wrong and somewhat something of a moron to have completely ignored the correction I made about the difference between slander and libel.
Here, let me walk you through it, pay close attention now:
1. Slander refers to the spoken word
2. Libel refers to the written
Need me to guide you through it again? Still overwhelmed by the confusing amount of information I just gave you in those two points?
As for your definition of the law in this regards, are you a child perhaps? Might that explain your utter inability to check facts before you post loud and confident declarations which serve to prove you to be grossly and willfully ignorant on the subject you are discussing?
Google is your friend. Try looking up some actual facts and not relying on banging your fist on the table and shouting things you believe are true, when they are not. Libel, or slander for that matter, is nothing to do with saying something you can't prove. If you have every reason to believe what you are saying is correct then it is neither libel or, if you spoke the words, slander.
Don't believe me, go ask your nearest lawyer who will happily take $100 off you to explain the same thing.