I watched this thing on 2 twin Idiot Savant girls, they had an amazing memory but one girl was asked about a date before they were born and and what day of the week it was . They of course nailed it but one said something about when she has to think hard it smells like burning rubber with a straight face.....I just about spit.....I know the feeling.....lol....When you smell the rubber burning its time to quit what ever you're doing.