A logically robust statement would be "We can not say what is right, only what is least likely to be wrong". As we can see, you won't impress most people with

A logically robust statement would be "We can not say what is right, only what is least likely to be wrong". As we can see, you won't impress most people with it, they prefer someone who exudes confidence. If he is right or wrong does not matter much it seems.