> No way of limiting the expenses

This pattern seems common among business people: things working in the common case vs things working in corner cases, it’s how you end up with consumer windows running critical machines. I’m always shocked and moderately disturbed when I see it but I guess we all need to accept the reality that most people are very pragmatic. It makes sense, most people’s intuition comes from “the real material world” where you have to pragmatic, I think many of them fail to realize that on a computer you don’t have to give up certainty the way you do in “the real world.”