I read a lot about polynomials and splines (and in case of the latter also lots of it derivates) and often some special cases were introduced to explain, mostly, why a spline is more suitable than a polynomial.
Nevertheless, at the moment I feel like it doesn't play a role in 99% of the cases whether I choose a spline or a polynomial. But still I have to make this decision. Is there an easy and simple advice how to proceed?
Or maybe a bit more general: Are there cases where polynomials are better than splines?