When I first read 1984, the idea of the "memory hole" seemed so ridiculous I thought it was George Orwell's biggest screw up. That couldn't happen because people's memories would remember, you can't change the memory in their brains! So why would the official stories change? It wouldn't work to change people's perceptions.

But alas it was his most prescient and accurate prediction. 

 That’s true! And the reality has become much more worse than his prediction because “BIG OTHER” emerged.
People never realize or recognize what’s going on with their behavioral surplus data to control the general public.