>Adding 8 hours of sleep, only gives him 6 hours to do EVERYTHING else in his life. That's friends, family, leisure, excersise, but also groceries, commuting, c

>Adding 8 hours of sleep, only gives him 6 hours to do EVERYTHING else in his life. That's friends, family, leisure, excersise, but also groceries, commuting, cooking, cleaning, walking his dog. He never slept for 8 hours. He mentions in his blog, that he was taking catnaps in place of real sleep. Surely, the restorative effects of sleep would have reduced the probability, if he'd managed to get enough of it. So perhaps it was more like 8-10 hours for remaining things (if you add entertainment to the list, it does take time). And just 4-6 for catnapish sleep.