Whatever a crowd agrees is impossible becomes impossible, because the agreement ends the only test that could settle it.
The words chosen to describe a place install a picture, the picture sets the state, and a camp waking up in terror will always vote to go backward. Height was measured accurately. The meaning attached to the measurement was manufactured, and meaning is what people act on.
A description repeated often enough stops functioning as a description and starts functioning as a border, a fence the mind mistakes for the horizon. Nobody has to guard it. The land itself never stopped a single person; a sentence about the land stopped everyone, and a generation died of it within walking distance of what they had been promised.