PHY.8:10 - Architectural Rationale

The physical choice of alternatives and weights comes before their mathematical aggregation. This preserves the distinction between a distribution that fits records and a mechanism-based account that can predict a changed preparation. MMP.7 supplies the observation-law construction; this pattern supplies the physical grounds that construction needs.

Fluctuations and physical time remain alongside the mean because they can change the use without changing individual statistics. Keeping those relations explicit makes the method transferable from populations and transport to sensing and physical computation.

PHY.5 decides which physical detail can be omitted. Here a statistical consequence can show that an omitted correlation or memory matters, and return that problem to the effective-description method. A complete microscopic theory is unnecessary when a physically justified restricted account already settles the question.