I have invented a system for casino blackjack which can be used productively against a single-deck with a 6:5 payout on naturals. Using BJStrike, I have simulated play on two billions decks and posted a screen print of the results below.

My blackjack system can be purchased here for $30.  If you have purchased a copy of my book, Axiomatic Theory of Economics, you may e-mail me a copy of your receipt and I will give you the blackjack system for free.