[verve_rat]

The premise of my comment was: if a person passes an interview using some tool and then uses that same tool to do the job, then didn't the interview work?

You found a person (+ tool combo) that can do the job. If that person (+ tool combo) then proceeds to do the job adequately, is there a problem?

If you present a scenario in which a person passes the interview and then doesn't do the job, the you are answering a question I didn't ask.

To you scenario I would respond: the interview wasn't good enough to do its job, the whole point of the interview process is to find people (+ tool combos, if you allow) that can do the job.