Adderbox76 , 30 days ago (edited 30 days ago)

Time travel is possible. Changing the future however, isn’t.

It has to do with wave function collapse. The cat is both alive and dead until its observed, at which point the wave function collapses to reveal which it is.

So let’s say you go back in time and successfully kill Hitler. Well you’re now observing that outcome from a tangent timeline. In our timeline, that wavefront has already collapsed. There’s no takesies backsies. Its immutable.

If you can go back and try again, your just creating new wave funtion collapses, not changing the ones that already occurred.

Its like re-rolling a dice because you didn’t like the outcome. You can re-roll as much as you want, it doesn’t erase that first roll; its still there, imprinted on the quantum foam of the multi verse.