I find Maturana’s definition satisfactory. Best overview in his book with Francesco Valera: Autopoiesis and Cognition: The Realization of the Living (1980) ht

I find Maturana’s definition satisfactory. Best overview in his book with Francesco Valera: Autopoiesis and Cognition: The Realization of the Living (1980) https://en.wikipedia.org/wiki/Autopoiesis_and_Cognition:_The_Realization_of_the_Living https://en.wikipedia.org/wiki/Autopoiesis_and_Cognition:_The... Unfortunately out of print.