In all the talk of graphical downgrades no one seems much preoccupied with 'why?'. Why build something and then proceed to tear it down, piece by piece, in the hope that ever more diminished expectations about the final product won't be severe enough to...
Thrown knives need to be ducked under; slashed knives need to be jumped over.
Don't focus on one assailant - keep moving and attacking in all directions.
If time's running out, whip out your gun to finish the bad guys off.