It isn't impossible. [Though she isn't kidding about the complicated part. She'd have to explain about the whole cycle of death and rebirth, the balance of the world, the dragons themselves, and a lot more, and that only covers a small part of the world.] But to answer your question, no. It was definitely most confusing to actually even wake up as myself. In my world we are reincarnated after a time, usually with no knowledge of our previous lives.