Ouroboros Thoughts
Time as a dimension could be seen to have an approximate starting point and end point. Not made of certain events, but just that everything than can happen has only so long/far to happen. I also see it as a loop of sorts, like the Ouroboros devouring it's tail at the end all matter breaks down into it's most basic states and come exploding out the other side at the beginning of time.
In this model the most likely mode of time travel would be being able to survive the end and be spit back out in the beginning eventually arriving where you left.
My first forays into the tesseract seemed to suggest this, since then the serpent has been shedding its skin. I keep coming back to the idea of the wrinkle in time and seeing the serpent coiling in like fashion.
I've also been pondering the Butterfly Effect, and the so called Observer Effect and how this might apply to my time magick experiments. The idea that each experiment changes "reality" usually subtly with out decimating the contents, similar to a snake shedding it's skin but still essentially being the same snake.
The subtlety of the changes is relative I suppose but also unimportant. That the changes occur is the important thing. I'm increasingly feeling like I'm treading on potentially dangerous ground, an acute awareness of the responsibility I take on when I opt to actively tinker with reality.
It makes me realize why magick is often written about in a solemn manner, and why a sense of humor is so crucial.