Yeah! I touch on it in the book, but basically you treat your character background as the "person" playing the game, and your class and other stuff as the "character" the person plays, but it's a little loose to give GMs some space to figure out how best to approach that. I also encourage the idea that "people" in the game can have multiple "game characters", just like in real life where you might have your main character, and then a few lower-level alts. People can also swap characters or accounts.