I know the OP is on his own mission, but ChatGPT actually breaks down what he is saying and what is missing from his reasoning very well and I found it an interesting read worth a share:
That forum post is not accurate — it mixes real physics terms with misunderstandings. Let’s break it down:
1. "Particles can be 'observers'"
- In physics, observers are not literal particles. An "observer" just means a reference frame — a way of measuring events in space and time.
- A particle can define an inertial frame (because it has a worldline through spacetime), but that doesn’t make it an “observer” in the sense of a conscious entity or a computational agent.
2. "Since there are 10^80 particles in the Universe…"
- 10^80 is indeed the rough estimate for the number of protons (or baryons) in the observable universe.
- But nothing in relativity requires the universe to track all pairwise relations between every particle. Physics is local — interactions are between nearby particles/fields, not across the entire universe simultaneously.
3. "In order to compute length and time (using Special Relativity) the Universe has to compute a number: 2 combination 10^80"
- "2 combination 10^80" is a combinatorics expression (binomial coefficient). It would be the number of ways to choose 2 objects from 10^80, which is ≈ (10^80)^2 / 2 ≈ 5 × 10^159.
- But relativity doesn’t require computing all such pairs. Time dilation and length contraction apply locally between two reference frames (two worldlines), not across every possible pair of particles.
- So the premise is wrong: the universe doesn’t need to “compute” this gigantic number to make relativity work.
4. "That number is much too large to compute in a fraction of a second."
- Physics doesn’t work like a digital computer doing brute-force combinatorics. The universe doesn’t “compute” reality using an algorithm in the way a CPU would. The laws of physics just are, and interactions evolve naturally according to them.
Bottom line:
The statement is not accurate. It confuses the idea of “observer” in relativity, misuses combinatorics, and treats the universe like a digital processor that has to crunch all possible particle combinations. Special relativity only needs local relations, not 10^159 computations.