My boss last year was a big fan of this. When I asked him why we weren't getting the tutorials we were supposed to, he got all Zen and said, "My job is to open the door but only you can walk through." Deep. Anyway, this is all prompted because I had the following exchange with one of the doctors this week:
I wonder if they do this sort of thing every time anybody asks them a question...PTRWhy is the girl in bed 12 on roxithromycin?
DoctorWell, why do we put patients on roxithromycin?
PTRMmmm. A telling point.
PolicemanDo you know how fast you were going ?
DoctorDo you know how fast I was going?