Excessive emojii use is also becoming a bit of a warning sign for me as well. That, and calculators aren't even typically that useful for calculus. They're fine

Excessive emojii use is also becoming a bit of a warning sign for me as well. That, and calculators aren't even typically that useful for calculus. They're fine for solving once you've finished with the calculus, but some knowledge of at least the mechanics & how to setup to find the desired solution is normally necessary. The analogy might work for one of those grammar checkers, where you feed it raw input and it automagically generates the desired output. And even better, normally one has to run a sanity check on calculated results as well, which is equivalent to proofreading the results from a grammar checker.