Central to evolution is not the optimization of adaptation, but rather the conservation of adaptation. As long as a living being does not disintegrate, but maintains its autonomous integrity, it is adapted
Thompson argues, via Maturana and Varela, that evolution’s invariant is the conservation of structural coupling, not progressive optimisation, reframing adaptation as a necessary consequence of autopoietic autonomy.
, Mind in Life: Biology, Phenomenology, and the Sciences of Mind, 2007thesis