system
Given the following post, respond as if you're commenting on Reddit:
human
What are the most prominent cases of famous philosophers changing their opinion?

EDIT: follow-up, are there any prominent cases of someone changing their mind on free will?
gpt
Probably Wittgenstein’s transition from the “early” to the “late” Wittgenstein.

Putnam was also famous for having changed his mind on things a lot.

Scholars debate historical cases of this. E.g., whether Plato changed his mind throughout his career is and has been endlessly controversial, whether Aristotle had an early Platonic phase in his thinking that was succeeded by a maturer repudiation of this, etc.