yet another two kinds of people

a) Those that talk to you as though you had the IQ of a newt, and 
b) Those that give you the benefit of doubt, and assume that you are at least as intelligent, if not knowledgeable, as them.


This is one lens to apply to any conversation within the first few seconds, and watch how the parties behave. If you are one of (a), try shifting to (b) and see how amazingly you can make people resonate to what you're saying.