smart enough yet?

Walter Kirn raises some interesting questions in What's so Great About Acuity?

The devilish problem, of course, is defining "smart enough." Enough to accomplish what, precisely? To make a living or to make a killing? And smart enough to satisfy whom? An employer who wants you to do your work by quitting time or one who wishes you had finished it yesterday? Being able to do what must be done is liberating, but being able to do whatever might be done (or whatever your driven ego or pushy boss might conceivably demand) can be enslaving.

He then brings an example of when it might be beneficial to suffer from decreased mental ability (and no, not the standard example of the dumb blonde catching the man):

I read somewhere once that many mothers and fathers suffer a rapid, appreciable drop in IQ after their babies are born. This, if true, is a huge gift from nature. Diapering, feeding and comforting little ones demands dumb endurance, in my experience, not penetrating cleverness. Thinking too clearly while cleaning up diarrhea on two hours' sleep in a house that you've just realized is one room too small and two times too expensive can make you suicidal.