Doesn't everyone casino rotate multiple decks in such a way that you can't really keep track?
Yes, rotating decks and increasing the number of decks in play increases the complexity of the game which as you say makes it hard to keep track of odds as a player.
Beyond that a lot of Casinos add rules and that too drastically changes expected win rate.
Like if the game pays 6-5 your expected rate of return in -1.39%. Through no doubling after splitting and you lose another -0.14%, and no resplits is -0.10%.
The whole point of card counting is that it gives you a positive rate of return but only by a small fraction, but with enough games that small rate of return can make a lot of money because it makes the game a literal money printing machine. By changing the rules thay make the easier methods of card counting still have a negative return rate.
Trading functions on the same principals its just a different kind of games with different rules and odds, you are still functionally just counting cards though.
But isn't that not possible anymore?
It's still technically possible, at least up to eight decks (as far as I know). And that's what you'll probably find in your standard casino.
The only issue is that its really hard so only the top 1% of card counters make a lot of money. Most people don't have the patients to learn how to play perfect black jack which is still a losing strategy.
Turncoat said:ohgod, Ketamine?
Ketamine is a lot fun.