Last one to post here doesn't win

If we understand quantum mechanics does that mean we will be able to open a dimensional rift leading to a point in the space-time continuum where we had our brains before this conversation so that we can tell our old brains the knowledge we have gained thus causing a paradox that leads to the end of humanity as we know it?

We can do whatever But no pulling a back to the future and sleeping with our moms this leading to our own births

Hmmm you drive a hard bargain... But what if we were each other's ancestor?

So we fuse into one person and become the scientist.... NOW YOU'RE TALKING! sorry I am crazy XD