Falcons: Simply put...

[Radical]

What you're seeing is the result of having a young defense, with new players, in a mostly zone type scheme, with no off-season to work with.

Zone schemes work, they do, and anyone who says they don't are talking out their ass. The crux though is that they require cohesiveness and harmony from the coverage unit. One player needs to know when to let someone go and the other guy needs to know when to pick a guy up. It's very clear to me right now that not everyone is where they need to be. This is why the Patriots have given up more passing yards than anyone in the league, because they run a very complex zone scheme that requires smart and instinctive football players.

Looking at the higher ranked pass defense teams, most of them are either man coverage type defenses(Jets, Bengals) or they're defenses are loaded with experienced players(Steelers, Ravens).