I said this in about week 4, teams could throw to their check down guy every time and get 5-10 yards against the Bears. No one picks up anyone from the backfield.
I really don't think the Bears are trying their hardest...and why should they? Why shouldn't they? It's still football. I don't care if we've clinched everything, it's the Lions, they are a two-win team, and a division rival. Come out and play hard.