The compositional account implies that being alive is a property an individual (say the last remaining dodo) may bear on its own.

This account of life needs refinement, but it avoids at least most of the worries mentioned earlier. It implies that an object may be alive even though it is sterile (as in the case of mules), even though it survives on stored energy (as in the case of a silk moth), and conceivably even if it lacks nucleic acid (yet is still composed of things that engage in activities integrated in conformity with information they carry). In fact, it implies that being capable of none of the items on Aristotle’s list is necessary nor sufficient for being alive. What is more, the compositional account just ske...