Original sentence: If the player frees them, he is trapped himself.Originally, Atrus burned the books, thus trapping his sons forever.This was revised, to say that the brothers were not trapped in the void, but in desolate Ages
Edited sentence: The brothers were not trapped in the void, but in desolate Ages.The good ending is when Atrus burns the books, thus letting his sons trapped forever.The logic of Trap Books was then not real, only artistic license.This scenario (maybe it was too cruel), was revised.When the player frees them, he is trapped himself