Coarse graining determines which distinctions exist

Coarse graining determines which distinctions exist

Claim

A distinction may exist at one effective coarse graining while disappearing at another, without any change to underlying microdynamics.

Definitions used

Predictions

  1. A partition predictive at fine resolution loses predictive power when coarse grained.
  2. Entropy production increases as distinctions vanish under coarse graining.

Operationalization

Disconfirming outcomes

Candidate experiments / examples