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by dna113 2230 days ago
> with vague things like a count goes up with 5's or down with 10's

That is not vague at all and shows you how simple card counting is. Pair that with a blackjack strategy card which is based on the odds of winning certain hands and its easy to tell how a deck that has a higher proportion of 10's is better for the player.

https://wizardofodds.com/blackjack/images/bj_4d_s17.gif