Reading this book has made me question the commonly used blackjack srategy.I have been playing blackjack for longer than I care to mention.The author makes several good points for the use of this "new" srategy.As a consequence I have done just what the author suggests in this book, that is taking two decks of cards shuffling them together and playing at home using the Gregorian Strategy.At home it seems to work, I do not know about the casino as I have not tried it there.There is a counting system also in this book which also performs well at home.All in all this system again at home, performs well. I will try it in the casino and write a follow up review then.