Abstract This note aims to establish the influence of a system's political identity on its viability. Using an argumentative analysis of evolutionary theory, organisational cybernetics and other systems traditions, this paper demonstrates the importance of identity to the adaptability of viable systems. It demonstrates how the environment shapes viable systems and how natural selection makes certain political identities viable in systems. The conclusion of the paper presents some ideas for adaptation in viable systems and asserts that these ideas are anarchist in origin.