The shortest path to causality

This is my current study.

Nothing cannot exist because nothing has no causal path and causality is conserved. Thus there is at least one thing. Are its determining causality paths unique? Consider two causal paths toward the one thing. They can arrive simultaneously if there are two different causal thing the make the one thing. Can't happen, causality is minimized.   How about two unique 'one thing'? The causality path between them must be reversible, so they are one thing. Hence we can count the first two things, thing 1 and thing 2. But reversible causality says there is only one thing 2.

So the selection of 'primes' is a combinatorial necessity in systems will valid causality. The definition, prime, is combinatorial. The primes used for finite multiplication rings simply have an imposed law of combinatorics between them. We never discover infinite precision rings, we always end up saying 3.33...; which simply defines multiply as an large set of finite precision combinatorics.  The ellipsis give us a finite rule for multiplication. Or we use symbols, like Pi, Phi, etc, which are simply a combinatoric rule on primes. But in every case we are just modelling causality,.