You have seen the equations? 99% you don't get anything useful or somehow split the fucking universe, so that time-reversed flow of information won't break the causality. (And it fucking does break the universe, the local bubble we are in. Please, don't google false-vacuum.) We don't even know the speed of light in one-direction, because information travels at the fucking speed of light, whatever that is. Yet, you measure a spin of electron, and the other fucker in the opposite side of the universe, is known to be opposite in the instant.

The action is minimized by nature, in one way or other, even if this means punching a hole in the space-time continuum, to start a tree-of-universes descending from the host.

/s (I had enough beer for today.)