Neo-technomancy

The Tipler cylinder isn't proven, I doubt it will be.
The usage of the word mancy has also not changed to incorporate non divination acts. It is what it is, saying it's changed over time doesn't make it true.
There is some type of path or practice that deals with Quantum theory.I recall a discussion in my coven a few months back about it. I can't recall if it was a path or a practice. I do recall it used quantum theories and applied it to the same info we have used in the arts for years. It was the same information, just relating it to quantum physics. It's the same with an energy manipulation practice. It just gives new names to old acts.
I don't know if it helped you or not, but best of luck on your path.

To Lark's point, and you'll have to forgive me for being curt, but the phrase "time travel doesn't exist" doesn't sit well with me. Not only is the matter not closed from a scientific perspective, but as a negation to the process of debate and discussion I don't find the statement constructive.
Of course, I'm not saying you shouldn't have said it, but it was a bit of a non-sequitur in my opinion.
Then again, I am easily bored and picky, so take this with a grain of salt.