Your username brings to mind Newton's definition as "Fluxion being the instantaneous rate of change of a Fluent" - https://en.wikipedia.org/wiki/Fluxion https:/

Your username brings to mind Newton's definition as "Fluxion being the instantaneous rate of change of a Fluent" - https://en.wikipedia.org/wiki/Fluxion https://en.wikipedia.org/wiki/Fluxion This too is intuitive since when you consider something "flowing" its "rate of change" becomes easier to think about.