The same trial sorts people in two directions, and the difference is whether they are willing to face themselves. Those who undergo the slow purifying come out with something the others lack, a real understanding of what has happened to them and why.
Those who refuse keep acting out the same harm without ever seeing it. This is not mainly a matter of cleverness. A person only understands what he has actually lived through and worked on inside himself. So the meaning of the whole ordeal stays hidden from anyone who will not enter it, and becomes clear only to the one who does the inner work, because that understanding is exactly what the work produces.