Hmmm...interesting thought. I can see, in some ways how this might be true.....but I have to tell ya, I have sat back, totally amazed, watching some men multitasking like there is no tomorrow! Certainly can't be singleminded in order to multitask and do it well.
I know a number of men who are stay at home dads. Their houses are clean, their kids are clean, fed, nurtured and the yard work is done as well.