The page says people "would like to know if there are any problems that are easy for computers to see if a one person's answer is correct, but hard for computers to find a correct answer." However the example given seems to answer this question in the affirmative: it's a problem that's easy to check using a set of scales, but very hard to find a correct answer.
maybe the example needs to be more clear - it's hard for the computer to check all possible answers, but maybe it's easy for the computer to find the answer another way.
