This seems roughly the same as the monopoly question. Both are seemingly more about enumerating all the edge cases than anything to do with software design or i

This seems roughly the same as the monopoly question. Both are seemingly more about enumerating all the edge cases than anything to do with software design or implementation. In 20-30 minutes what do you generally expect to get out of asking this? The benefit to me of elevator over monopoly is that there are inherent issues of safety that dovetail nicely into fault avoidance and recovery and into broader system design and testing.