L'oeil de Sornon, qu'est ce que c'est?

[Elu Thingol]

Pour illustrer les propos de Tirno, je citerais Smeagol :

LotR, The Two Towers, Chap 3 :
"Hobbits must see, must try to understand. He does not expect attack that way. His Eye is all around, but it attends more to some places than to others. He can't see every thing at once, not yet."

C'est donc effectivement que Sauron ne voit pas tout en même temps :))