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> Are you gonna tell me residents in Tel Aviv will be able to hedge their chances of surviving tomorrow?

Yes, of course! If you had some advance warning your home town was likely to be struck with missiles soon, are you seriously saying you can't think of a single thing you could do to prepare? I would, at a minimum, make sure I was stocked up on first aid supplies, water, and food that I could eat without needing power or gas to cook it.


I live here, I don't need Polymarket to know that there will be missiles tomorrow. In fact, that's why I'm on HN now even though it's just past midnight here. Because it's a well known law of nature that just as I drift off to sleep my phone will violently alert me with this horrid bzzhhh-bzzhhh sound that missiles are incoming. Then I'll turn on the TV, any news channel, and see the "polygon of uncertainty" overlaid on a map of the country, updating in real time, and I'll decide how fast to put my shoes on. Polymarket odds ain't got nothing on that.

More seriously - I used to think this was a good argument. But the night before the war broke out, I checked Polymarket and the odds were under 20%. I also checked the news and listened to my gut, and I'm glad I made the call to fill up my car's tank and prepare my go-bag. Came in handy when we woke up to sirens and had to move fast to get closer to shelter.

Yes, it's anecdata, etc etc


And don't you see the other part of the medal?

That there are economical incentives to make it happen just to make money?

Such events have little-to-no "wisdom of the crowds" those events decided by a handful of people. And their consequences catastrophic.

What if there was a derivative for whether you will be hit by a car tomorrow?

What would you say if there was a contract on whether your county will burst in flames this month?

Are you happy because you can hedge this event, or don't you realize the obvious peril?


> That there are economical incentives to make it happen just to make money?

I don't see how there is. The liquidity in a prediction market is not high enough to compensate for the expense of going to war.

The war was going to happen irregardless of the prediction market. The prediction market only let us know when it was going to happen with some hours to spare.


Ballistic missiles are pretty expensive. You'd have to bid a lot of money for it to be worthwhile to shoot them at a country just to make money on Polymarket.

If there was a prediction market for whether I'll be hit by a car tomorrow, and it was lucrative enough that it would actually be worth anyone's time to deliberately hit me with a car, I'd stay home and bid on "no". Pretty sure I'd make more than enough to cover the cost of ordering pizza.

There are already perverse incentives to commit arson, like insurance. And it's entirely possible that prediction markets can make insurance even more cost-effective.


> Ballistic missiles are pretty expensive. You'd have to bid a lot of money for it to be worthwhile to shoot them at a country just to make money on Polymarket.

Not your money, you can be just a random in the executive and lobby for it.


They might have been in the last decade, but now it’s just yet another franchise audiences have stopped caring about.

They have no one to blame but themselves, judging by the quality of Hollywood movies in recent years.

You make a good argument for the opposite of your conclusion. If you’re planning a system that’s supposed to last for millennia, that system shouldn’t depend on the fiat of the International Earth Rotation and Reference Systems Service.

> There is some talk of eliminating the leap second, which would over time have the Earth and sun diverge with regards to noon and such

“Over time” really glosses over how much time it would take. In 500 years there might be half as much divergence between solar noon and 12:00pm as we intentionally inflict on ourselves with DST, or that France and Spain inflicted on themselves in the 1940’s so they could share a time zone with Germany. By the time anyone will even notice we will probably change time systems for other reasons anyway. It’s not even remotely comparable to the Julian/Gregorian issue, which dealt with leap days. Each day has 86400 seconds.


The honest usage of “it turns out” is usually to gloss over an unnecessarily tedious argument that the author doesn’t want to waste your time with. And I think this is a fair characterization of even the use that the author criticizes here:

> When I moved to New York, I was very excited at first. It's an exciting place. So it took me quite a while to realize I just wasn't like the people there. I kept searching for the Cambridge of New York. It turned out it was way, way uptown: an hour uptown by air.

In principle, it’s entirely possible that pg kept a detailed diary of his attempt to find a community of intellectual peers in NY that compared to the one he found in Cambridge, and if you read the entire diary you would be satisfied that he carried out an exhaustive search. But even if that were the case (I wouldn’t expect it to be; who keeps detailed diaries documenting every opinion they ever form), that would dominate the length of an essay that was supposed to be about how cities work as focus hubs for specific types of ambition.

That’s not to say pg can’t be wrong about this point; it’s still a statement of opinion. What “it turns out” really signifies is that the author made a serious effort to investigate the question prior to forming the conclusion. They might be lying about that, but they can also lie about facts.

I guess I just consider it an insult to the reader’s intelligence to say that ‘it turns out’ is a particularly deceptive way to sneak in an unsubstantiated conclusion, because it’s not very sneaky. If I said “it turns out the moon really is made of cheese”, nobody would be fooled. If Buzz Aldrin said it, a few people might be fooled, but only because they already know he’s actually been there.

On the other hand, we routinely accept “it turns out” reasoning all the time, in the sense that we generally trust other people to come to conclusions that we don’t feel the need to audit. If I get labs done at the doctor’s office and it turns out I have high cholesterol, I don’t have a particular need to audit the lab’s methodology. You can’t rigorously audit all of the information in the world and if a writer you reasonably trust writes “it turns out” that X, you are reasonably justified in updating your certainty that X is true.


It’s possible to build mechanisms for this. Not perfect or foolproof ones. Maybe your phone stores a digital ID for its owner and sets a cryptographically signed “IsAdult” header. If you pull the signing key from the phone you can spoof that, but you can bring a fake ID to the bar too.

The problem is that the people who want age verification don’t really care about the technical details of how it’s implemented and the people who oppose age verification just want unfettered online pornography out of principle, so no one is actually thinking about how to implement age verification in a way that protects privacy.


And horses actually do better on dirt than on pavement.


Surely you can’t be suggesting that a committee of environmental activists might be biased in favor of Greenpeace?

https://www.trialmonitors.org/meet-the-committee


Where are these emissions coming from? For instance, if this is counting the emissions involved in logistics, none of that inherently or necessarily requires greenhouse emissions—you can electrify trains, tanker trucks, and refrigerators.

If this is counting the methane emissions of the cow itself, that’s not a fair or complete accounting. The cow produces methane in her digestive system after eating grass, and the grass grows by, among other things, extracting CO2 from the air. Then the cow burps methane, the methane combines with atmospheric oxygen and breaks down to CO2 and water, and you have a closed loop; the cow cannot belch more carbon than she eats, and that carbon came from the air in the first place.


Methane traps far more heat than CO2 before oxidizing back into it.


That doesn’t change the fact that you’re selectively counting only one side of a closed loop process. Methane may be a more efficient greenhouse gas than CO2 but if that effect dominated, we would expect to see the global warming trend start with the evolution of ruminants, not the Industrial Revolution (a time when the North American ruminant population actually declined a significant amount!)


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