People like the OP make many mistakes when dealing with people.
They believe by using some kind of systems, techniques and tricks they can find "best talents" and avoid "miserable candidates".
But the real problem lies somewhere else: People have the wrong expectation of people—expectations are always too high and aim for perfection. You can expect perfection from systems, programs, products, services but not from people and thus, you should treat them like this. Of course real talents often deliver this expected perfection but they are rare and usually if you got one it was a lucky hit.
They believe by using some kind of systems, techniques and tricks they can find "best talents" and avoid "miserable candidates".
But the real problem lies somewhere else: People have the wrong expectation of people—expectations are always too high and aim for perfection. You can expect perfection from systems, programs, products, services but not from people and thus, you should treat them like this. Of course real talents often deliver this expected perfection but they are rare and usually if you got one it was a lucky hit.