Could you hide something from your siblings? I don't mean hiding the last Reese's cup or neglecting to mention that you borrowed your sister's top to go out. I mean serious things. What if you were required to keep a secret -- a big secret -- from your siblings? Whether you like your siblings or not, there is still something that binds you together. You have a common understanding about the world, a common background. That common understanding is something that, no matter what, will always link you as siblings.