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gnfargblyesterday at 11:52 AM1 replyview on HN

We're talking about whether a modification of the expected probabilities changes the dynamics of the game. The example I gave was deliberately extreme, because that makes it easier to reason about.

If you want a casino example, then consider a roulette wheel that always lands on 36 but still pays out as usual. I think you'd want to play on it. Now consider one that always lands somewhere between 30 and 36. Still worth it, right? With careful bets and a good starting float you're still coming away from the table up (with a very high probability).

In fact for a roulette wheel you only need two dead pockets for the player to get an edge. Bias is exploitable.


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brookstyesterday at 1:28 PM

Sure, but you’re pressing on the truth that a small modification taken to an extreme is a large modification.

When the original point was that a tiny fractional loss in an RNG is not going to make a practical difference. Which I believe is also true. And it is also true that a large loss in an RNG is catastrophic.

They can both be true.

And roulette is 2 out of 38, 5.2%. That’s 17 times more than the 1/256 here, which was already a simplification of the (I think) 1/65536 in question.

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