This is our ultimate assumption
An exploration of critical rationalism ..
Toulmin’s wanted to formulate a revised concept of rationality which is not a property of ideas or people but instead it is a matter of the attitude which people adopt towards contending ideas and the way they form critical preferences and if necessary revise them in response to changing circumstances. (He did not use the term ‘critical preferences’)
Game Theory | Internet Encyclopedia of Philosophy
He concluded that the strong formulation involving paradigms and revolutions was designed for effect, to “shock the sensibilities” of the bourgeoisie like avant garde art. In response to criticism Kuhn had to water down the amount of change required for an episode to count as a revolution until the “mini revolutions” became so small and localized that he was left with the fairly familiar old idea that there is constant change in different parts of a vigorous field. Sometimes there is a much larger change (Copernicus-Kepler-Galileo-Newton and later Einstein) which has more far-reaching effects but the transition is not rapid or irrational and large areas of the discipline (not to mention science at large) are hardly perturbed by the process.