The most essential interview question Sorting the diamonds from the rough can be a challenge, but try this one, simple question on every candidate.7 Apr 20097 Apr 2009 WhatsappPrintPDFXLinked-inFacebookMore sharing optionsBelieve it or not, when you are faced with conducting interviews with a number of candidates, just one question, asked of each one, will help you separate the winner from the losers.Read more here.