Overton Window. No "e" at the end. As you can probably guess, I have indeed heard of it. It is a range of ideas considered "acceptable" within discussions. The Cathedral (or, as you may know them, the "Intelligentsia") is determined to drag that window in the direction of top-down authoritarian government. It has an entirely different set of priorities from bottom-up governance:

Controlling the food supply is a big part of that. We've seen it before.