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What Is an Individual? Biology Seeks Clues in Information Theory. | Quanta Magazine

Krakauer and Flack, in collaboration with colleagues such as Nihat Ay of the Max Planck Institute for Mathematics in the Sciences, realized that they’d need to turn to information theory to formalize their principle of the individual “as kind of a verb.” To them, an individual was an aggregate that “preserved a measure of temporal integrity,” propagating a close-to-maximal amount of information forward in time.

Their formalism, which they published in Theory in Biosciences in March, is based on three axioms. One is that individuality can exist at any level of biological organization, from the subcellular to the social. A second is that individuality can be nested — one individual can exist inside another. The most novel (and perhaps most counterintuitive) axiom, though, is that individuality exists on a continuum, and entities can have quantifiable degrees of it.

https://www.quantamagazine.org/what-is-an-individual-biology-seeks-clues-in-information-theory-20200716/