The recent start of the NFL season got me thinking about what an inexact science recruiting is. So much time, money and brainpower is put into scouting out the players, yet there are so many variables and unknowns that top picks can turn out to be complete busts (try mentioning the name Ryan Leaf to a Charger fan) and late-round selections or undrafted free agents can emerge as stars (Tony Romo, anyone?).