But life is inherently complex in terms of depth AND breadth, so just having skills in one and noticeable deficits in another would still to me be not very valuable. I think if we go strictly by that definition then you are sort of implicitly disadvantaging S's when in reality there are very few situations in life where daily functioning doesn't require skills in both.
Just look at some of the frequent threads that discuss intelligence, Iq, and its correlations with type. Its absolutely fascinating that some people are willing to go into great depths to prove their point but in reality going to that level and excluding others and making "arbitrary" judgments based solely on menial things like that to me is the epitome of shallow.
I guess I'm kind of caught up in the denotations and connotations of that word 'shallow'.