"Now, I will concede that there’s an inherent goofballedness in debating the ethics of an action that is impossible. It probably isn’t that different than trying to figure out if leprechauns have high cholesterol. But all philosophical questions are like this - by necessity, they deal with hypotheticals that are unfeasible. Real-world problems are inevitably too unique and too situational; people will always see any real-world problem through the prism of their own personal experience. The only massive ideas everyone can discuss rationally are big ideas that don’t specifically apply to anyone, which is why a debate over the ethics of time travel is worthwhile: No one has any personal investment whatsoever. It’s only theoretical. Which means no one has any reason to lie."
— Chuck Klosterman, Eating The Dinosaur