“Think about the telling fact that error literally doesn’t exist in the first person present tense: the sentence “I am wrong” describes a logical impossibility. As soon as we know that we are wrong, we aren’t wrong anymore, since to recognize a belief as false is to stop believing it. Thus we can only say “I was wrong.” Call it the Heisenberg Uncertainty Principle of Error: we can be wrong, or we can know it, but we can’t do both at the same time.”