Morning Scepticism: IQ

A general rule of thumb I have is the moment someone starts to justify their position by whipping out an IQ score or equivalent (such as being a Mensa member), that's when I stop listening to them. Being smart isn't authoritative, scoring high on an IQ test just shows you did well on an IQ test. Using an IQ test as evidence just means you have a weak case. Why not stick Ph.D next to your name while you're at it?