I'm not sure anyone imagines running FizzBuzz in production. It is an interview tool only, first to determine whether the candidate can program, but which can a

I'm not sure anyone imagines running FizzBuzz in production. It is an interview tool only, first to determine whether the candidate can program, but which can also be used as a basis for some interview questions. The counter example helps to answer whether the candidate understands how numbers are represented by computers and how addition and division function. It also helps to answer whether a candidate knows what, in such trivial code, could (not must) be optimised were the value of n to increase insignificantly. As you say, probing questions about how often the code runs, what the value of n is, or various other questions will all vary the answer. But to suggest that the priorities are wrong is a little silly, most interview questions are wrong to some definition.