My experience is that you might be able to fake up to a certain point. After that, the interviewer can keep throwing curve balls and see how the candidate will

My experience is that you might be able to fake up to a certain point. After that, the interviewer can keep throwing curve balls and see how the candidate will approach those. Of course, it all depends on the problem given. I’ve seen system design questions that are way too abstract to be useful but the best ones I’ve been asked were very real life scenarios.