I think multitasking in the sense that we are trying to interpret it as, is, very unusual. Trying to simultaneously concentrate or focus on two unrelated tasks such as typing this reply while continuously singing 'bye bye miss american pie', unabated, would be pure folly. Our subconscious accounts for a lot of our actions such as breathing and mechanical operations but we don't need to focus intently on those actions. Unless we are drowning or asthmatic. Perhaps a savant or suchlike person could conceivably carryout a true simultaneous multitask but... I dunno?
