Fortunately, for smaller companies there's another option - use personal networks to find candidates, the chances would be much better. For googles, they can just afford some misses, it costs but not something they couldn't stomach.
yes, that can improve the odds, but i've hired people through my network (as a founder and an employee), and good hires (those who add productivity & efficiency to the team) still often boils down to the idiosyncracies of the individual human relationships involved.
going back to basketball, no team has yet to sign 10x nba all-star carmelo anthony this year, and 8x all-star dwight howard only just signed with the lakers (on an unguaranteed minimum contract) because of a season-ending injury to demarcus cousins. both players are individually very talented, but are reputed to be hard to play with (thus lowering team productivity & efficiency).
