There was a lot new in calculus, but it also didn't come out of nowhere. That Newton and Leibniz came up with similar ideas in parallel, independently, around

There was a lot new in calculus, but it also didn't come out of nowhere. That Newton and Leibniz came up with similar ideas in parallel, independently, around the same time (what are the odds?), supports that. https://en.wikipedia.org/wiki/Leibniz%E2%80%93Newton_calculus_controversy https://en.wikipedia.org/wiki/Leibniz%E2%80%93Newton_calculu...