""we don't really exist in objective reality.""
That's worth discussing, no? Subjective physics? perhaps a link to the so called erratic sub-atomic quantum physics?
"my" code is continuously altered. Every minute, it's programming changes ever so slightly.
and yet remains within certain parameters which continually create the constant and consistent change in your programming.
In the face of a proposed omniversal singular reality, everything must affect and be affected by everything else in some form or another, else we inadvertently suggest a separate reality that exempts any part of reality to be unaffected by any other part of reality. a buffer if you will. perhaps another dimension.
With the topic of omniversal reality, time travel isnt really on my list of dicsussion worthy topics. i doubt that traversing time, physically, with our bodies, could be of any level of benefit or potential. our minds, our intangible and subjective self (not selves, as we must all be one in an omniverse), on the other hand, might be constantly traversing "time" as we build our perceptions of reality. Things such as memory and imagination might affect the world physically, in a long term basis, through the cause and effect of our physical actions.
Wherein the question of the physics of our subjective selves comes into play; what affect does physics have on emotion, memory thought, understanding, idea, concept, and imagination?
What interactions are there between these subjects and the physical world?
Is it even chemical?