Answer:
A trendsetter. A person could start a small group of people doing a certain thing and as more people see them do it they might want to start to feel like they fit in. As the action/thing spreads, more people will join in and start doing it too. This could spread to the rest of the world or maybe just a small school.
Explanation:
He drunkened polyphemus and while he was sleeping he stabbed his eye
Although the sentence is incomplete, I think that's the correct one. Both Harrison and the ballerina get killed, restoring the world to its previous situations, but their actions don't inspire rebellion and not everybody ends up happy. Harrison's parents don't, although they don't know why they are sad.