What is an appropriate definition of 'life'?

Background definitional challenge noted as notoriously difficult, motivating the paper's approach of updating 'machine' rather than defining 'life'

Source paper

extracted_from

(2021) · Joshua Bongard · Michael Levin

cosine ≥ 0.65 · no typed edge

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.

What Is A Useful Definition Of Lifequestion0.808
What Is A Useful Definition Of Life Givenquestion0.797
life (quality in environments)concept0.793
The felt quality of wholeness and adaptation that makes a place truly sustainable and nourishing.
Life (Alexander's broad definition)concept0.791
What we call 'life' is a general condition which exists, to some degree or other, in every part of space... every connected region of space... has some degree of life, and that this degree of life is well defined, objectively existing, and measurable.hypothesis0.788
The central predictive/causal hypothesis of the book, to be tested in later chapters.
Life as a Quality of Spaceconcept0.786
The idea that life is not merely an attribute of living organisms but an attribute of space itself; any spatial system can have more or less life depending on the life of its component centers and their density
Life (in buildings)concept0.778
The quality that makes a building or place alive, beautiful, and supportive of human life; argued to arise from the wholeness of centers.
Life is a thing which can only be reached by humanness, by the personal, by the individual, childish temperament.claim0.778