Taurus model ?
When I started looking about this I directly saw the 4th dimention such as space/time environement.
0 dot
1st line
2nd plan
3rd tube/sphere/donut
4th animate it
Then : E=mc²
oh wait 5th ? Yes the ENERGY ! To me it is so important !(not limited as unique dimention but symbolized).
Because when you live you're material you are acting thanksfully to the energy ! And when you die you become energy !
Big bang : E=~100% mc²=~0%
Then E diminuates, the dilating force.
Toward half-bang (quarter animation) : E=0% mc²=100%
And then E become negative or idk it's a phenomenon called black hole !
Material become Energy.
So now we need to know how energy becomes material ?
ho wait I forgot about a thing, NOW !
I think so I am.
E=mc²
Now is one of the million possibilities respecting this equation.
If we follow your theory of time being fluid/river, now could've possibly never had existed; given the possibility that the past was altered to fit the current now.
If that is assumed, the previous now would still have subsisted at one period in another time, when the past was in an untempered form, but does not exist anymore because the past was altered to make the previous now never exist, making the current now in place of the previous now which would have never existed.
That's the point about time travelling. Changing things... but if you go back and change something, the equation and reality does still exist, material is here ! energy too ! That's it. you should accept that if we do we will for sure kill somewho but he never existed ! And for sure there are good intentioned people so the builders will for sure prevent for this to happen ( I hope and I think because I am !).
And look paradoxaly : if you destruct universal equilibrium in the past, so you will never exist so you will never do it ! because you are still the guy from the future
so it is so easy to deal with some malintentioned time-traveller, go find his mother at nursery !
