[marginalia_nu]

If the rate of growth varies dynamically over time, then it is not exponential growth. Exponential growth only varies in proportion to itself.

[lupire]

It's all epicycles of exponents on exponents. The world is a Fourier series.

[marginalia_nu]

You can likewise argue that all the world is a bunch of polynomials or whatever based on Taylor series. It's not particularly informative.