You honestly think that unsuccessful head coaching hires are due to the lack of doing homework, versus the odds being against hiring someone good?It doesn't have to be a "diamond in the rough" if we do our homework.
And even if you do think they're due to the lack of doing homework, what makes you think the people making this decision for us are capable of doing the right homework?
You'd rather put your faith in those people's ability to do the right homework than put your faith in a head coach who's won a Super Bowl?
Come on.