I realized that San Diego was much newer to the 3-4 than Pittsburgh, but I thought they had it in place longer than that - my mistake.
Of course, we are even younger, with a rookie, three 2nd year guys, two 4th year guys, two 5th year guys, a 6th year guy and a 9th and 10th year guy., One player is converting this year from DE to OLB, and one is converting this year from OLB to ILB, and almost no one on the defense had ever played 3-4 before last year.
But your point is well taken - success can happen relatively quickly, but 2 things have to happen here. First, Parcells has to gain enough confidence in the group of youngsters to turn them loose a little, and second, the group of youngsters has to prove they are really worthy of the accolades they recieve. Frankly, they haven't proven a whole lot other than they have potential, but way too many fans equate potential with guaranteed success, and history tells us loud and clear that often isn't true.