I considered myself to be fairly intelligent guy. But after reading about an interesting test in "Black Swan" by Nassim Taleb, I am worried that I might be far from intelligent, maybe even autistic. Taleb says autistic people are handicapped in social situations because they can't put themselves in the shoes of others and are unable formulate or understand simple (this is crucial here, that he said it is simple) idea such as "he knows that I don't know that I know." "He knows that I don't know that I know." I am completely dumbfounded here. I have no idea what this phrase suppose to mean. Can anyone explain to me?