Anchored Causality Theory

The wave is what exists. The particle is what happens.

Lectures

Where the wave leaves its mark

A nine-lecture course from the measurement problem to its resolution, using only the physics quantum field theory already contains. Each lecture is a slide deck you can step through in the browser; the four thought experiments of the Evidence page run through it, and every technical word is glossed where it first appears.

Part I

The problem

The measurement problem, a century of attempts, and what decoherence settled and left open.

  1. 01The Strangest Thing About Quantum MechanicsWhy the most successful theory in physics can’t explain its own results: the double slit, the Rock, the measurement problem and Schrödinger’s cat.
  2. 02A Century of AttemptsSix approaches to the measurement problem, where each keeps a particle or declines to, what each one sacrifices, and what decoherence settled and left open.
Part II

The ingredients

One wave with its modes and its clock, the bath that is already there, and the mark it makes.

  1. 03Fields Are FundamentalThe ontology ACT reads into quantum field theory: fields real, modes defined, the Filter, the field not yet in time, mass as the field’s clock, and a particle as an anchored event.
  2. 04The Bath That’s Already TherePhotons, phonons and detector modes; the Valves, which make the rate a laboratory number; why a bath does not give back.
Part III

The theory

The mechanism, the Born weights, the paradoxes, and what the laboratory shows.

  1. 05The Anchoring MechanismOne coupling, three faces: the bath decoheres a mode, directs its dynamics, and keeps what it takes. Release, and the event law.
  2. 06Born Weights, ForcedForced by the one-wave law, one history, support certainty, no signalling for every division and continuity. Descent is now the consistency check.
  3. 07Resolving the ParadoxesMost paradoxes need a particle. Drop it, and Schrödinger’s cat, wave–particle duality, which-path, Wigner’s friend and the eraser with delayed choice are settled in ACT’s own terms; one history settles the copies of the observer; Bell’s correlations remain, without signalling.
  4. 08What the Laboratory ShowsFour experiments, each performed, read as thought experiments — the Rock, the Valves, the Filter, the Mark — the boundary they fix, and what they could still show.
Part IV

Synthesis

The formal spine, and the complete picture.

  1. 09Ontology Recapitulates MathematicsStructure, the bath at the Legendre point, states in time; then the core claim, the comparison, what is open, and the path forward.
How to use the decks

Stepping through a lecture

Each deck opens on its title slide. Use the arrow keys, the space bar, or the buttons at the foot of the screen to move between slides; on a phone, swipe. Every deck links to the previous and next lecture and to the Claim Ledger, which is the authoritative status of every claim the lectures make. Your browser’s back button returns you here.

The wave is what exists. The particle is what happens. Measurement is the physical process by which a wave leaves one mark.