Echoing other comments, the importance of "proof" in math has not been universal even in West. For example, the rigorous definition of derivatives[1] was not g

Echoing other comments, the importance of "proof" in math has not been universal even in West. For example, the rigorous definition of derivatives[1] was not given until 1817, 130 years after Newton's Principia was published. [1] https://en.wikipedia.org/wiki/(%CE%B5,_%CE%B4)-definition_of_limit https://en.wikipedia.org/wiki/(%CE%B5,_%CE%B4)-definition_of...