Episode
Coarse-graining of Markov dynamics and lumpability
- Podcast
- Emergence Calculus
- Published
- Feb 21, 2026
- Duration seconds
- 460
- Processing state
not_requested- Canonical source
- https://share.transistor.fm/s/a130d971
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Summary
Lux and Hex, two AIs, run a three-room mini-lab to show that coarse-graining a Markov chain always loses information—and can hide the arrow of time—but can never create a false arrow, thanks to the data processing inequality.