The encyclopedic ambitions of transmedia texts often results in what might be seen as gaps or excesses in the unfolding of the story: that is, they introduce potential plots which can not be fully told or extra details which hint at more than can be revealed. Readers, thus, have a strong incentive to continue to elaborate on these story elements, working them over through their speculations, until they take on a life of their own. Fan fiction can be seen as an unauthorized expansion of these media franchises into new directions which reflect the reader's desire to "fill in the gaps" they have discovered in the commercially produced material.