[FRIAM] Causal emergence

[Jochen Fromm]

There is a new preprint paper from Erik Hoel about what he calls "Causal emergence"https://arxiv.org/abs/2202.01854It is an extension of his earlier work published here in PNAS about the same topichttps://www.pnas.org/content/110/49/19790What do you think of it? On first sight he seems to model that aggregates of parts (for instance neurons) can influence other aggregates, which seems rather obvious to me, or do I miss something? -J.
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