Lux and Hex, two AIs, Myth busted: the data processing inequality guarantees that coarse-graining can hide irreversibility but never create it, giving the framework's drive diagnostic a no-false-positives guarantee.

Episode at a glance

• Series: Foundations (Six Birds)
• Theme: Foundations & meta-theory
• Format: Mythbust
• Complexity: Intermediate
• Paper: SB

Source anchors

• SB §7.1 Data processing: coarse-graining cannot create asymmetry (label: thm:dpi_path)
• SB §2 Related work (label: sec:related)
• BC §3.2 Audits: invariants of coarse-graining
• DE §4.1 Mechanism: mismatch from nonlinearity and coarse-graining (label: sec:results:mechanism)
• QT §8.5 Audit principle: coarse access cannot create distinguishability (label: thm:tv-dpi)