Okay, I know this whole Richard-gives-the-compass-to-Locke-who-gives-it-to-Richard-who-gives-it-to-Locke thing has been talked to death, but the one comment I have not seen is that Flocke (or whoever he is) intentionally causes this paradox. In other words, Neither Locke, nor Richard have a clue why they are giving this compass to one another. They just do it because someone they trust tells them to. But Flocke starts (continues) the loop on purpose. I don't know, scientifically, what the consequences are for creating a paradox, but I'll bet Flocke does.