The properties of a gifted are invisible facts. Someone else who is not gifted has to overpass terrible difficulties to understand a part of his existence. But for another gifted many things are obvious. The only way to avoid this problem is faith because even trust is not sufficient when the work is huge. It’s too big to be understandable in an easy way. It needs an effort even if it’s a fact. But only few persons are prepared to do that and this is the reason why it remains invisible to the most of them. But in any case the invisible facts exist, so they produce traces with their work. So the traces represent an access to them and they are more easy as they are visible.