I don't think that there's any reason that it has to be one or the other. It's interesting that you bring up Winston Churchill. He slept less than 6 hours per

I don't think that there's any reason that it has to be one or the other. It's interesting that you bring up Winston Churchill. He slept less than 6 hours per day, which suggests to me that he likely had a higher dopamine response than normal. That's associated with higher drive, which means Churchill was probably one of the outliers I was talking about.