[mr_toad]

Non-linear models often perform better. You’re never going to approach anything like GPT with a linear model.

[witnesser2]

I don't think mentioning non-linearality means you can bypass the singularities you may cause typically CUSP, buckling etc and omit the analysis intentionally or negeliccantly.

[rcme]

Theoretically you could use a polynomial model which, while not linear, is pretty high on the explainability scale.