Note that it is if you only want the best candidate, all others being equally bad. If, instead, you are content with just a "good" candidate to avoid having to

Note that it is if you only want the best candidate, all others being equally bad. If, instead, you are content with just a "good" candidate to avoid having to pick a terrible one, then a proposed solution is for the cutoff to be sqrt(n), where n is the number of candidates. See "Cardinal payoff variant" in the Wikipedia page.