The Problem of Checking the Residuals

i think the way that we present methods is particular, like theory and methods classes also, but also in but definitely in data analysis. Most people who teach rogression would tell you to look residualske, i mean, me too. But this always is like cind of dycodomy. It's like well, thire's it assumption, right? And then it's like, well, we can't have the check to see if the assumption is true. So there is a choice made there, right? You could just assume that it's true and then not check, right? Yes? Noand that would be like logical with e mathematics, right? Or you can just