Hello fellas, i had 2 elementary questions to ask, since I'm just a recreational player and somewhat new to the trade. 1. I know that the more decks a game has the greater the house advantage, but why? 2. I was reading a book and it said that anytime you dd or split and the dealer gets a blackjack the house only takes your original bet and not your additional bet. Is this a common rule amongst all bj games? I could have sworn i lost my entire bet when i lost to a BJ when I've split or dd. Thanks for the help