Page 14 states that "If a player has no cards in their hand AND deck at the end of the round..." (after upkeep), they lose the game. Yet I've watched several online tutorials state that the game is over if there are no cards in their hand OR deck at the end of the round. Which is It?
Also, interestingly, page 20 states the OR operator when describing the same losing condition but for multi-player rules. Was that intentional?