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Everyone were also betting on quantum computing and the hydrogen energy revolution.

My napkin math says that, for a system at around 75°C, you would need about 13,000 square meters of radiators in space to reject 10 MW of heat.


why do you think they are betting on it if it so obvious to you that it won't work?

Just because some CEOs pour billions into fantasy projects it doesn't mean they're viable. Otherwise we all would be in the metaverse wouldn't we?

Sure, I don't claim all of them go well. Do you want to run a hypothetical exercise on how many they get right vs wrong? And based on that we can see if this is a "fantasy" or not?

No but you're claiming "if they all are investing X amount then these bets obviously must pan out". If you follow that rationale then it means that all bets that these company's make in the same space must all pan out. So if they don't all pan out then the fact that they're all making bets isn't a sound rationale for it being true.

As others have pointed out, investors notoriously have FOMO, so rationale actors (CEOs of big tech) naturally are incentivized to make bets and claims that they are betting on things that the market believes to be true regardless if they are so as to appease shareholders.


No, i don't claim that all bets must pan out - simply that most bets are made intelligently with serious intent.

that's the way i see this bet as well.

your take on investors is naive and largely incorrect - its the musical chairs theory of markets.


> simply that most bets are made intelligently with serious intent.

That is NOT what you said. You said this:

> Why would they all put money into this if it is so obvious to all of you that it is not going to work?

In other words: "if these companies are putting all of this money to work then it's obvious it will work"

So, no you didn't simply say "their bets are made intelligently with serious intent". No one is saying these companies aren't serious about it, they are saying there are legitimate physics limitations involved here that are either being ignored or the companies are betting on a novel scientific breakthrough.

> your take on investors is naive and largely incorrect - its the musical chairs theory of markets.

Then you clearly have never worked with investors before.


Here’s our point of disagreement: I think smart people have made a bet in this with serious intent after considering all the pitfalls. You think they are either deliberately ignoring it (so ridiculous) or they are betting on a scientific breakthrough.

It’s too comical to even address the “they are ignoring it part” so I’ll ignore it.

I would agree with you that part of their bet might involve hoping for breakthroughs and the investment analysis probably factored it in.

Lots of earlier investments have banked on breakthroughs like this.

Also your opinion on how markets work is naive and unscientific.


Because it will inflate their stock valuations? It's like with fusion energy or going to Mars etc., constantly X years away and currently economically unfeasible.

why do you think their stock will inflate?

Well it made you invest in them.

Yes because as I said I believe it will work out, so does Google, SpaceX, Blue Origin.

I'm not sure if you're joking, but "AI datacenter in space" is the kind of phrase that attracts investors, that's straight from Musk's playbook for keeping the stock trading at ridiculous P/Es, especially now that he is planning SpaceX IPO.

why does it attract investors if it is so obvious that it will fail?

it is a ridiculous conspiracy theory you are trying to assert - musk comes up with an absurd idea that captures investor's attention. its not like he wants to make a good product, he just wants to fool investors. not only that, he fools them, gets the money and then puts said money into this venture that obviously won't work. why does he waste his time into a venture that obviously won't work? who knows


You should ask yourself this, not me, you're the one who blindly believes what Musk says. He also said he was creating a new political party in the US, how's that going? Did you believe him when he talked about landing people on Mars in 2018? It’s 2026. How is boring company going? etc. I think you're overinterpreting what I wrote and projecting. I'm telling you how the physics works, and the physics is simple here: unless you change the physics or discover some exotic, cheap materials, this is 100% not economically viable today or in the near future.

So you have no clue why he's doing it? He's putting money in a thing that will obviously fail.

Either you are way way smarter than him, or he's doing this for some other ulterior motive.


You didn't answer my questions. How is The Boring company going? And in this context, you can also ask: "Is he putting money into something that will obviously fail?"

Also, go back and read how many people who were "smarter than him" there nine years ago:

https://news.ycombinator.com/item?id=14223020


Here Bezos, sundar, Jensen all are invested.

On boring: it’s easy to say in hindsight.


You know why I mentioned hydrogen energy earlier? There was a Financial Times article last month titled "Hydrogen dreams meet reality as oil and gas groups abandon projects", which notes that "Almost 60 major low carbon hydrogen projects—including ones backed by BP and ExxonMobil—have been cancelled" because they weren't economically feasible. Space data centers are in the same place today. It's physics. And none of the people you mentioned have invested in this. They may be interested and might research the topic, but that's not the same thing. I've yet to see any plan that explains how they'll replace failed hardware and manage heat while keeping the whole thing economically feasible.

ok so you are smarter than all of them? and if they had put you in charge instead of the phd's, they might have been better off?

You're using an uninteresting appeal to authority argument again.

So let's talk physics. Are you familiar with the radiative heat-balance problem? You can use the Stefan–Boltzmann law to calculate how many radiators you'd need.

Required area: A = P / (eps * sigma * eta * (Tr^4 - Tsink^4))

Where:

A = radiator area [m^2]

P = waste heat to dump [W]

eps = emissivity (0..1)

sigma = 5.670374419e-8 W/m^2/K^4

eta = non ideal factor for view/blockage/etc (0..1)

Tr = radiator temperature [K]

Tsink = effective sink temperature [K] (deep space ~3 K, ~0 for Tr sizing)

Assuming best conditions so deep space, eps~0.9, eta~1:

At Tr=300K: ~413 W/m^2

At Tr=350K: ~766 W/m^2

At Tr=400K: ~1307 W/m^2

So for 10 MW at 350K (basically around 77°C): A ~ 1e7 / 766 ≈ 13,006 m^2 (best case).

And even in the best case scenario it's only 10 MW and we're not counting radiation from the sun or IR from the moon/earth etc. so in real life, it will be even higher.

You can build 10 MW nuclear power plant (microreactor) with the datacenter included on Earth for the same price.

Show me your numbers or lay out a plan for how to make it economically feasible in space.


you are saying you can stop an entire division in google, nvidia, blue origin with this bit of theory?

like all the employees had to do with read this and be like: wow i never saw it that way.


Because "investors" are a large group. Many of them are not involved in the industry and are clueless about tech. Same reason they invest in OpenAI, that hasn't made any money.

Investors, both commercial and individual, often have more money than sense.


Do you think investors as a large group make enormous amounts of money on average?

I didn't say they make it. They have it, like an older person who grew their portfolio over time. They are an example of someone who invests in AI without knowing anything about what it is.

its incorrect - investors and wall street in general _makes_ money on average.

Kodak made a crypto coin. Where did that end up?

> Do you want to run a hypothetical exercise on how many they get right vs wrong? And based on that we can see if this is a "fantasy" or not?

I was taking 2x2000 IU with almost no sun exposure and then did bloodwork. My level was 77.8 ng/mL. The lab's reference ranges listed 30-50 ng/mL as optimal, 50-100 as high, over 100 as potentially toxic, and over 200 as toxic.

I don't know why this is downvoted, I had a very similar experience a while back. I took 4000 IU/day for about 4 months, insignificant sun exposure and ended up at 60 ng/mL (lab listed normal range as 30-40).

My starting levels were unknown but I assumed they were low given my usual sun exposure and some low-energy symptoms (which resolved a couple of weeks after I started taking it). I discontinued VitD then and now I only take 1000 IU/day in the winter.


> 500,000,000 people paying $75/mo is $450B/yr.

Majority of people use ChatGPT for free, that's why they are introducing ads. Normal people will not pay 70-100$ per month for LLM subscription. Your numbers are way off.


I'm sure if cell phones were free, the majority would be free users too.

But beside that, OpenAI is pricing ads at $60/1000 views. That is 3x what Meta charges, which is around $20/1000. Meta pulls about $20/user/month in ad revenue. Triple that and we land at....$60/mo.


> I'm sure if cell phones were free, the majority would be free users too.

LLMs will be a commodity for the majority of people around the world and will be available for free for most tasks on Meta platforms or via Google.

> But beside that, OpenAI is pricing ads at $60/1000 views

Good luck with that CPM.


> How it ends. Where we likely go from there.

I highly recommend Anniversary https://www.imdb.com/title/tt12583926/


Depends on what you mean by hidden restrictions. If someone's ability to vote is disabled without notifying them, and they can still upvote or downvote but it has no effect, would you call that a hidden restriction?

> There needs to be UX requirements on the process from day one against which the end result is judged. (E.g. "a company should be able to register in x days", "a complete application should be no longer than y pages", "application costs should be less than z euros").

It was announced you will be able to create company fully online and will have it ready in max 48h.


Around 100 million Chinese people travel abroad every year, and they all return to their country of their own free will. You can't even leave North Korea without special permission, which only certain workers get.

I've been to China, and I'm going again this year, I'm from the EU. The funniest thing is that China's Tier 1 cities are more developed than EU cities and offer a better quality of life.


nobody equated china to north korea. the post you are replying to applied equivalent logic to an extreme example (north korea) to show more easily that the logic cannot be correct.


An extreme example changes the logic here, which basically means it's a bad example. And if we're talking about the logic of this argument, there's no such thing as morality in foreign relations. I don't see any morality when everyone buys oil from Saudi Arabia or Qatar, knowing how they treat their own citizens and who they sponsor.

States use the "morality" argument when they need to build a narrative and portray someone as bad/evil to justify actions against them, while the real reason is almost always geopolitical interests or money/resources.


I would like to thank the 100,000 people in Madagascar[1] who made it all possible by creating training data for ~€0.30 per hour.

1. https://www.youtube.com/watch?v=Q7NZK6h9Tvo


So you are basically arguing that it's hard to distinguish, therefore we shouldn't try. By that logic, we couldn't prosecute fraud because it's sometimes hard to distinguish from aggressive marketing, or couldn't have espionage laws because it's hard to distinguish from journalism.

The distinction isn't about "valid" vs "invalid" opinions, as you framed it, it's just about authenticity and coordination. A Russian citizen genuinely expressing pro Kremlin views on their personal account is exercising speech. A state funded operation running hundreds of fake accounts pretending to be American citizens, artificially amplifying divisive content, is something different, it's basically a form of information warfare.

And what I write here isn't theoretical, coordinated influence operations have inflamed ethnic tensions from the Balkans to Myanmar, not to mention Russian-Ukraininan conflict propaganda. These aren't just "opinions we disagree with", they're documented operations with measurable effects on real world violence. I mean this is a form of war, in which some countries want to destroy your society fabric for their advantage.

Every democracy already makes this distinction in other domains. Foreign governments can't donate to political campaigns. Foreign agents must register when lobbying. Do you call them violations of free speech? They're just acknowledgments that coordinated foreign influence is fundamentally different from citizen discourse.

The difficulty of drawing lines doesn't mean no lines exist.


> So you are basically arguing that it's hard to distinguish, therefore we shouldn't try

No, I said because it's hard to distinguish, therefore we can not use it as an excuse to enact censorship.

> By that logic, we couldn't prosecute fraud

Fraud is illegal.

> couldn't have espionage laws

Espionage is illegal.

No matter what you do or what you write, enacting "desinformation laws" would require a ministry of truth to decide what is fact and what isn't, a task governments are famously incredibly bad at because they always have vested interests in not telling the truth.

> A state funded operation running hundreds of fake accounts pretending to be American citizens, artificially amplifying divisive content, is something different, it's basically a form of information warfare

And yet it is still speech and not distinguishable from genuine Russians sharing their opinions. It is easy to refute the opinions of many a people by discrediting them to be of the origin of a manufactured propaganda machine. Once you start doing this for foreign people, the next logical step is to continue this strategy for local activists or political opponents.

> And what I write here isn't theoretical, coordinated influence operations have inflamed ethnic tensions from the Balkans to Myanmar, not to mention Russian-Ukraininan conflict propaganda. These aren't just "opinions we disagree with", they're documented operations with measurable effects on real world violence. I mean this is a form of war, in which some countries want to destroy your society fabric for their advantage

I know this to be factual. I'm not denying it's existence at all. I'm making a point here. I don't want the government to hold these tools you propose. Any law enacted and every power given will not only be wielded by a government of parties you support, but also at one point by factions you disagree with entirely.


The issue I have with your argument is that you're treating inaction as neutral. It isn't. Choosing not to act against coordinated foreign influence operations is itself a choice with consequences. If a hostile state can freely run thousands of fake accounts to inflame divisions, amplify extremism, and erode trust in institutions (and we deliberately tie our hands) then we're not preserving some pristine free speech environment. I mean we're ceding the information space to whoever is willing to manipulate it most aggressively.

The "marketplace of ideas" doesn't function when one participant is a state apparatus with unlimited resources pretending to be thousands of organic voices. Your slippery slope argument applies to laws we already have and accept. Lets take US as an example, the Foreign Agents Registration Act has existed since 1938. Foreign campaign contributions are illegal. These laws require distinguishing foreign influence from domestic speech. By your logic, these should have already devolved into tools of domestic political persecution. Have they? Imperfect enforcement, sure. But "the government of a faction I disagree with might someday abuse this" hasn't been a reason to repeal FARA.

Another issue that I have with your argument is that you've identified risks of action but proposed nothing. What's your actual framework here? If coordinated foreign information warfare is real and harmful, and ongoing (which you acknowledge) what should democracies do? I mean if your answer is "nothing, because any tool could theoretically be abused" then you are not offering any policy, right? but basically you are arguing for resignation.


> The issue I have with your argument is that you're treating inaction as neutral.

The issue I have with your argument is that you're treating action as a necessary evil enacted by a well meaning government. It isn't.

> I mean we're ceding the information space to whoever is willing to manipulate it most aggressively.

I am well aware that this is a difficult thing to solve. What is it then, that you propose we do?

> These laws require distinguishing foreign influence from domestic speech. By your logic, these should have already devolved into tools of domestic political persecution. Have they?

Yes. YES. The FARA has sometimes been applied asymmetrically, especially against individuals or organizations connected to political opponents, lobbyists and think tanks. It is the perfect example for what I mean. The FARA is broadly defined and with a DOJ under an administration, it is prone to misuse. The DOJ under Trump considered to use it to charge Hunter Biden. The identification of "hostile agents" that you argue is necessary is exactly what I mean when I point to government misuse, as the Trump admin is currently using these exact laws to identify activists and nonprofits as domestic terrorists [1]. We have people in this thread decry the Trump administration for their actions and stances on selectively applying free speech while they at the same time argue for more government power even while it is being abused in this very moment. I am aghast at how this is happening.

> Another issue that I have with your argument is that you've identified risks of action but proposed nothing. What's your actual framework here? If coordinated foreign information warfare is real and harmful, and ongoing (which you acknowledge) what should democracies do?

Do what democracy's are already doing. Issue sanctions that hurt. A large amount of LNG and gas imports in Europe are still traceable to Russia. Invest into digital thinking and digital literacy. But that would require putting your money where your mouth is, instead of arguing for those sweet tools of citizen control. Germany spends below average on education and our pupils suffer. The same is true for US education.

Sorry, but I won't argue for controlling a stupid populace when we fail at teaching at the same time. I will give you an example. The censorship tools already exist, at least in Germany, and they are justified and enacted by politicians that cite "studies" from NGOs like Amadeu Antonio, HateAid, Demokratie leben! or NETTZ. All organizations that receive massive funds from the govt that exist only to deliver "proof" and "reasons" for censorship because of "hate" and "misinformation". Of course, these studies [2] are then cited massively [3] by the media aparatus and ultimately the same politicians that paid to have this information produced [4]. Sometime after, the truth may be reveiled [5], the falsified data exposed, but the damage is done and laws are proposed [6] that enable the government to break and enter into journalist offices and media companies and shutting them down without a court order. All in the name of fighting misinformation and saving democracy.

[1]: https://www.aclu.org/news/national-security/how-nspm-7-seeks...

[2]: https://hateaid.org/neue-studie-politisch-engagierte-und-dig...

[3]: https://nachrichten.idw-online.de/2025/01/15/neue-studie-dig...

[4]: https://taz.de/Justizministerin-Lambrecht-ueber-NetzDG/!5689...

[5]: https://www.publicomag.com/2020/07/publico-dossierverfolgter...

[6]: https://dserver.bundestag.de/brd/2025/0766-25.pdf


Sanctions haven't stopped Russian influence operations, they've continued under the heaviest sanctions regime in history. I agree that digital literacy is genuinely important, but lets not kid ourselves that we can suddenly make it work tomorrow, it's basically a generational project. Meanwhile, influence operations are happening now, at scale, with measurable effects. So what I mean is that "invest in education" approach is correct but insufficient as a response to an active, ongoing campaign. It's like responding to a house fire by saying we should invest in fire safety education. Your home will burn down while you do this.

So I understand your point but you're essentially arguing that because democracies can abuse power, they should unilaterally disarm against adversaries who face no such constraints. Russia etc have no free speech concerns limiting their operations against us. Doing nothing will allow these adveraries to destroy our democracies from within.That is an endgame of your approach, and I just can't agree with this. So doing nothing because our tools might be misused feels like it guarantees we lose.

I think we can at least agree that the choice isn't only between "government ministry of truth" and "do nothing" and we need a middle ground solution. Transparency requirements (forcing platforms to label state affiliated accounts), requiring disclosure of foreign funding for political ads and influencers, holding platforms accountable for coordinated inauthentic behavior etc etc, these don't require the government to decide what's true. They require disclosure of who is speaking and who is paying. Think of the US influencers paid unknowingly by Russia, or the "patriotic" X accounts that turned out to be foreign run. Those are just the obvious cases already happening. This needs to stop or at least the public needs clear disclosure of funding and origin.

We have homomorphic encryption now. Let's use it in a way that protects privacy but still helps flag foreign influence and helps distinguish between foreign speech and protected domestic speech.


Ha! What sanctions? We are not sanctioning like we truly mean it.

> So I understand your point but you're essentially arguing that because democracies can abuse power,

No, my point is that because democracies are abusing power, right now, we should be against giving them more tools. The US democracy is in an active state of being dismantled because they have lots of shiny legal tools to do it. These very same beginnings can be seen in Europe too, when the EU tries again and again to pass privacy invading internet tracking laws. We are not in favour of Iran building nukes for "defense", and I would wager you won't defend their efforts in the face of critics when they say "hey, we're pretty sure they will abuse it" because it might not happen, even though abuse is clearly already happening.

> Russia etc have no free speech concerns limiting their operations against us. Doing nothing will allow these adveraries to destroy our democracies from within

If democracy is so weak that it needs to be protected from uncomfortable truths and the opinions of its people (read: opinions you or I may not share), then maybe it's not saveable.

> I think we can at least agree that the choice isn't only between "government ministry of truth" and "do nothing" and we need a middle ground solution.

Dead on. The only true weapon to combat misinformation is transparency. But transparency efforts are not what I'm seeing, and they are certainly not what Ursula von der Leyen means when she talks about the Digital Services Act.


I don't think transparency alone will be enough. We may need to treat foreign speech differently from domestic speech (my last sentence from previous comment), with different protections (prioritizing domestic speech) because you simply cannot control the firehose of propaganda coming from the rest of the world. And don't get me wrong, this isn't about silencing foreign opinions. What I mean is we need to recognize that a citizen expressing a view and a state apparatus manufacturing thousands of fake citizens expressing that view are fundamentally different things, deserving different treatment. We already make this distinction in campaign finance, lobbying, broadcasting etc. So I think extending it to the information space isn't a radical departure, it's basically catching up to the modern world.

I want to circle back to something, because I think there's an irony in your argument that's worth examining. The administration you're worried about abusing power is itself a product of the influence operations. We have documented evidence (not speculation) of Russian operations boosting Trump's candidacy in 2016 and 2024. We have confirmed payments to influencers like Tim Pool and others through Tenet Media, amplification networks on social platforms, coordinated campaigns targeting swing state voters. The Mueller investigation, the Senate Intelligence Committee report, the recent DOJ indictments etc all showing the same thing.

So when you say "look at how Trump is abusing power, this is why we shouldn't give governments these tools", I'd ask: how do you think he got there? The foreign influence you're arguing we should mostly tolerate helped install the government you're now citing as proof we can't trust government.

You're using the consequences of the problem as an argument against addressing the problem.

On your "if democracy can't survive this, maybe it's not saveable" point, I find this fatalistic in a way that doesn't match how you argue about everything else. You clearly do think democracy is worth protecting (that's why you're worried about government overreach, civil liberties etc) So I think yu're not a nihilist. So why adopt an all or nothing frame specifically here? Democracies have always required defensive mechanisms. We have treason laws, foreign agent registration, campaign finance rules etc. So it wasn't about "pure openness vs. authoritarianism", but basically it always been about where to draw lines. Drawing them poorly is a risk. But as I said before refusing to draw them at all isn't principled neutrality, it's just losing by default.


Guess what? Copyright violation is also illegal.

You are all over this thread in god knows how many comments arguing about Germany and world wide censorship whereas this thread - and the fine - is about copyright and Italy. The second they use it for anything else I'll be happy to jump the line but until then they are - for once - using this law as it is intended and it doesn't really matter that there are other unrelated wrongs that you could commit using the same mechanism.


You are jumping back and forth between moral arguments and legalistic arguments.

If your defense for going after fraud and espionage is its illegal, are you fine if a country makes censorship legal?


No. My point is that real people are hurt by fraud and espionage and comparing outlawing those to outlawing speech is inane


I am hurt when I think I am hearing words from a fellow citizen that are their own opinion, when instead it is a foreign actor pushing a narrative for their state.

I am all for free speech, but I am not for anonymous speech which is choking the internet. If I am in person speaking with you, I can be fairly certain that you aren't actually a completely different person underneath a rubber mask. I want to at least know that an account I am speaking to is a _person_ and not a robot, although Id probably want country of origin too.

I do not have a good answer for how to achieve that without having a chilling effect on speech, but maybe that's a good thing? I go back and forth on if its better or not to require you to say who you are if you want to say something in public.

In private, go hog wild.


> I am hurt when I think I am hearing words from a fellow citizen that are their own opinion, when instead it is a foreign actor pushing a narrative for their state.

No you are not.

> I am all for free speech, but I am not for anonymous speech which is choking the internet

Then you are not for free speech. Have you ever considered from your point of view that anonymity is incredibly valuable to people who live under an oppressive regime, like Iran or Russia?

> I want to at least know that an account I am speaking to is a _person_ and not a robot, although Id probably want country of origin too.

I too, want many things. That does not give me the right to unveil people who wish to be anonymous. It's pretty wild that this is an opinion on hacker news, of all sites.


> No you are not.

If you are going to decide my values for me, then there is nothing left to discuss.


> perhaps $300

Maybe in US. In Vietnam, $300 is the average monthly salary, and the minimum wage is around $150. Probably the majority of people don't have a primary phone worth more than $300.


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