'He had been a graduate student at the time, preparing the obligatory freshman survey course in the history of science, and trying to understand how anyone ever accepted Aristotelian physics. Kuhn vividly recalls gazing out of his window for some time before suddenly grasping that Aristotle had meant something very different by “motion” from his Newtonian successors.'

https://lareviewofbooks.org/article/competing-paradigms-on-the-last-writings-of-thomas-s-kuhn/