Transformative politics is not the result of continual progress, nor is it possible to the same extent at all times and in all places. It depends rather on favourable moments, which are described in political theory as kairos after the Greek god of opportunity. In his book Die Gelegenheit ergreifen – Eine politische Philosophie des Kairós (Seizing the Opportunity – A Political Philosophy of Kairos), IASS researcher Alexander Neupert-Doppler analyses the use of this term in modern theories of societal change.