First Encounter
A guided walk through the core ideas. No prerequisites needed.
Coherence is how collectively a group of things behaves. A marching band moving in lockstep: high coherence. A crowd wandering in a plaza: low coherence. Dense matter in a crystal lattice — every atom locked in step: high coherence. Sparse gas drifting between stars: low coherence. Synchronism asks whether one equation can quantify this transition across all of physics.
Expert note (physicist terminology)
BEC/superconductors land at low γ (≈6×10⁻⁴ for BCS) because large Ncorr sits in the denominator: γ = 2/√Ncorr. A very small γ means a nearly flat S-curve — so C stays close to 0 at any physically accessible density, despite these systems being quantum-coherent. This is a documented inversion in the framework (see γ Calculator caveats): the formula assigns the flattest curves to the most-correlated systems, opposite to what real phase transitions do.7 short pages — ~90 seconds each. Use the progress bar to jump to any step.
New here? This 10-minute intro is the fastest path to understanding the framework. Want a more structured journey? Learning Paths offers Beginner / Intermediate / Advanced routes with 6–8 steps each.
Start with Presence
A single electron floating in a vacuum — almost nothing around it to interact with. Now: the core of a neutron star, where matter is packed 10¹⁴× denser than lead and everything is interacting with everything. That difference is what Synchronism calls presence (ρ). At its simplest, presence is density — how much stuff is packed into a given space. But which stuff counts? Only the neighbors close enough to actually influence the system — everything beyond some horizon might as well not exist. Synchronism calls that horizon the MRH (Markov Relevancy Horizon): the bubble of nearest neighbors that matter — formally, the minimal set of degrees of freedom whose transitions materially influence coherence. Everything outside the bubble can be ignored. A single atom doesn’t “feel” the Andromeda galaxy — it only responds to what’s immediately around it; Andromeda is outside its MRH. See the Glossary for the full definition. Synchronism starts here: presence, measured within that bubble, is the universal input.