11. Many. 12. They are, I think, it's just that Guardians don't [i]need[/i] to. That's the central point of the Speaker's philosophy. 13. Probably hiding from the scary sounds of shooting or extinct. 14. According to a Ghost, the Traveler is similar to a giant Dyson sphere, but then it acknowledges that it doesn't know. 15. Because the Speaker doesn't like too many questions.