I'm yet another person who didn't see 'Peter Pan' in it at the time. Even now that others have mentioned it, I'm not sure how helpful I find it.

We're asked to affirm our belief in fairies in order to save Tinker Bell. Here, the 'peoples of the earth' - divided by the Master from the beginning, and increasingly so over the last year (no television!) - have, through Martha's work, found a new, unifying myth, and come together to act as one - and in doing so will ultimately save themselves.