AgentHelix wrote:The goggles thing is pretty easy to understand. Everyone could see Nuada, Wink and the Tooth Fairies because they were making no efforts to mask their presences. They needed the goggles to see the troll thing masquerading as an old woman because she was doing that to blend in with normal people. But once they're inside the Troll Market, they don't need them because again, those things have no reason to mask themselves in there.
I guess I missed the part where they explained that the goggles saw through deliberate self-masking...to me it seemed like they were stating that "we simply cannot see goblin-folk" or whatever
What you're saying makes sense, I just don't recall that explanation in the movie