"People assume that time is a strict progression of cause to effect." What they don't realize is that if the slightest detail of a key point is changed, it alters history, and the future, forever! What if Luna hadn't grown jealous of her sister, in fact, what if Luna was a different person altogether? Would she have been trapped in the moon, would Discord have been turned to stone, would the Crystal Empire still be standing; would Equestria be very different? We're about to find out!”