[lolinder]

> most real world problems are also about subtraction knowing what not to try and why it might not work

This is true in most fields. I view school as giving you a broad overview of everything that you might need in your field, but for any given problem it will be on you to narrow it down to the solutions you actually need and then to learn that specific set of solutions well enough to apply it.

People fresh out of college will usually try to apply everything all at once until they learn—either from a mentor or their own hard experience—to filter it down. It might be that ML has it worse than other fields right now not because it's taught wrong but because it's new enough that there aren't enough mentors with decades of war stories.