But the manifestation more relevant to the real world is not having the experience base to realize it's biting you in the ass. Specifically, even though X is working, it could be working better, for less effort. Or another common case is X is not working and you misidentify why ("lazy developers not willing to do the work" instead of "used the wrong paradigm for the job", for instance).

The difference is that an expert will be able to make a good decision about that trade-off. A novice is restricted to the tools and practices they are familiar with - they might come to the same conclusion, but not for the same reasons.