PBT: Proportional Wave Theory

Not yet written up. This is one of Matthew’s original conceptual topics for PBT, but genuinely has no developed content anywhere on this site — no paper or article defines or uses “proportional wave theory” as a specific mechanism. Listed here as a placeholder rather than invented after the fact to look more complete than the actual work — see The Theory for what is currently developed, and Fringe Ideas for PBT’s overall status.