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by alexey-salmin 279 days ago
> You need to specify UNIX 'date' as your intent as that phrasing wasn't used in the article.

No, I didn't mean unix date, I mean literally date.

I can see two interpretations of the phrasing in the article. Either you have 86M shuffles per day (in this case knowing the date would benefit you) or you have 86M shuffles period (in this case even the date isn't necessary, you already have the totality of information). In both cases we can consider the problem of solving the game with 86M shuffles.

Syncing clocks is needed to enumerate all possible shuffles in real time on a 1999 PC, which is what the paper demonstrates. Doing this in realtime for 86M combinations wouldn't have been possible back then. However building a 1 Gb index file and making a HDD lookup in realtime was absolutely possible on very modest 1999 hardware, you can write such a program in a couple of hours.

Knowing the shuffle with three more rounds of betting to go represents a completely broken poker game, not just some minor biases in outcomes.

I have absolutely no idea what hairsplitting you are talking about, let alone bad faith discussions. 86M combinations is such a little number that you can analyse all of them and solve the game even on 1999 hardware. It's a fact, not a matter of opinion or idealistic standards. If you can just kindly acknowledge this fact, no further discussion will be necessary.

1 comments

> No, I didn't mean unix date, I mean literally date.

Then, your entire comment is predicated on a mis-quote you emphasized. The article said "seconds," not day of the month. You need to work on clarity, if that was your intent.

> I have absolutely no idea what hairsplitting you are talking about

Either you're lying to me or yourself.

See discussion about "negligence" that you conveniently ignore. Meanwhile, you're tilting at windmills as you keep insinuating someone is arguing against you on the point of algorithmic flaws.

I'm sorry, but you simply don't understand how the exploit works. You don't need to guess the seed of the RNG, you don't need to synchronize anything, none of that matters.

There is such a low number of possible seeds that you can try them all, enumerate all possible shuffles, then check which one of them you've got. Then you know everyone's cards. This is why the game is fatally broken. That's it.

Call it negligence or not, I don't care much. But I'm amused by the fact that you fail to understand a basic combinatorics problem.

Yeah yeah...more ad hominems and strawmen.

> Call it negligence or not, I don't care much.

More bad faith.

I have no intention of building straw men or bad faith arguments. If I assume good faith on your part (which becomes increasingly hard), the only explanation to your position above is some sort misunderstanding of the combinatorial problem.

So, very simple and good-faith-not-a-straw-man question: do you agree that with 86M possible seeds you can guess all the cards with high probability after you see the flop? No clock synchronization necessary or any other tricks, just direct precomputation of all possible shuffles.

Yes or no would suffice.

Not trying to be mean. But, I've already written you off, sorry.

Please go poll some English speaking friends and someone with experience in commercial law whether you're making sense.

You're also welcome to blow through time trying to prove whether 86M brute force approach is deliverable in game time with HW of the day, when the researchers expressly pointed out you can approximate the clock based on a couple hands and narrow to 200k * [+/- units of time] sorts.

Ok, so you refuse to answer even the most straightforward question. I guess you can reflect in your free time why it feels like people are attacking straw men while talking to you.

In this case this happened because after many messages I'm still completely lost as to what is your point exactly, and you refuse to answer simple questions to clarify it. All I know is you're angry and apparently disagreeing something I said.

Good day then.