Q: Why don’t “cheats” ever work on the uncertainty principle? What’s uncertain in the uncertainty principle?
So “cheats” are often conceived to get around the Uncertainty Principle. Now, lets say you create a set up to do an A type measurement, followed by a B type measurement. Similarly, a photon that has a definite result from the B type measurement will have a completely random result from the A type measurement. This is literally an uncertainty principle (though not one of the big ones, like position/momentum). However, the source of this “path uncertainty principle” and the position/momentum Uncertainty Principle stem from the same source.