As I understand it, the alternative to giving the correct answer isn't giving a wrong answer - it's giving an answer that's right to a high - but not 100% - deg

As I understand it, the alternative to giving the correct answer isn't giving a wrong answer - it's giving an answer that's right to a high - but not 100% - degree of confidence. There are plenty of domains where a very fast almost-correct answer is preferable to a perfectly correct, slower one. Take search, for an example. First off - it's very hard to determine an exact definition of the right answer. If the provided answer was good enough, it was right. Another domain is route planning, especially with multiple stops in arbitrary order (travelling salesman). There are plenty of applications where the 99% answer in one second is vastly preferable to the 100% answer in an hour.