The only way you can lose heat in space is through radiation. But radiation carries momentum. Not much per photon, but it was enough to cause the Pioneer probes to move in unexpected ways. This means you have to emit equal amounts of heat towards Earth and towards space. If your resultant is zero, then you're fine. You can even direct some of the heat backwards. It won't do a huge amount, but every bit of atmospheric drag you overcome, the less fuel you need to use to stay in orbit.

So you basically need absolutely gigantic radiators behind the space-based data centre, located inside a parabolic dish that will generate drag of its own (not to mention a potential difference betwen the lower and upper sections).

This is an insane level of complexity. You're better off parking it in a stable orbit between the Earth and the moon, so it's absolutely clear of atmospheric effects. You're still going to need radiators, but it's marginally better as you don't have to do quite so much directing of it. The latency would be horrible, maintenance would be next to impossible, and there's all kinds of other issues to consider.

No, I don't think you can make this workable.

However, space might be useful. This very same issue of heat only being radiated means that you can make wafers with much more even loss of temperature, no dust, bacteria, or dirt, and much lower gravity. If you were to make extremely high quality wafers (silicon or gallium arsonide) in space, then you should be able to make WSI processors, which should in turn reduce the demands that datacentres make.

The time it would take to set all this up would be about the same time as it took for IBM to perfect its stacked transistor topology. Intel was talking 90 cores per wafer-scale CPU a few years back - the shrinkage in transistors since then plus the x10 density IBM proposes might push you to 1800 cores per wafer, provided you can get the quality high enough. Which, in space, is quite possible.

You wouldn't need your datacentres in space. Your wafer-scale CPU plus packaging would be about the same size as a CD drive. You could pretty much dispense with datacentres at that point. A typical tower will have two spare bays. "Cartridge datacentres" could simply be plugged in as needed. A regular CPU-based cartridge for heavy general-purpose computing, a GPU-based cartridge for LLMs. Yes, home users would have power usage through the roof, but then it's no longer your problem.

The use-case for Concorde on trans-Atlantic passage was cemented for me when my uncle explained that every time he flew from NYC to London to talk to investors about his company, the stock price went up far more than the cost of his trip on the Concorde, and he could be back in time to sleep in his own bed the same day.

Seems like a no-brainer to me. I'm pretty sure (as others have pointed out) that if it weren't for the Continental-caused accident, the Concorde would likely have flown an additional decade.

Looking at current travel, there is enough demand to pack planes on BOS/NYC-SFO, SFO-HND, etc. routes that I'm sure there's enough business money to pay for supersonic service.

I am old and my sight grows dim, but I am pretty sure this all happened before the first 0.01 version of Linux was released.

"If you must write a check, he said, try to deliver it in person or take it inside a post office to mail rather than relying on your own mailbox or public drop boxes. "

That was the neighborhood advice going around our area 1-2 years ago. I myself was skeptical that mail theft was going on as I had dealt with the Postal Police when managing an e-commerce site and I knew they are very good at finding things like this. Unfortunately it turned out (1) I was wrong: there was mail theft going on in our neighborhood but (2) everyone else was wrong too: the mail wasn't being stolen from blue boxes; it was being lifted from the bins behind the slot in our postal service center. The perps were eventually caught but it took far longer than I would have thought.

These can be published or accessed, but never both at the same time.

It has been my experience, sad to say, that online stores aren't above selling consumer credit card information either, and I've grounds to think Amazon is one that does this.

I have an industrial air conditioner for my home. (It's a small home, but summers are increasingly severe.)

I don't recall being asked a damn thing.

My suspicion is that this is scaremongering.

I have been stress-testing AIs with increasingly complex projects for some time. The Chinese AIs struggle, but actually do a FAR better job of handling massively complex tasks than Grok, and Gemini just rolls over and whimpers at anything above a very low level of complexity.

What I've found is that the Chinese AIs tend to be sycophant but do "understand" complex projects properly in that you can ask specific technical questions and the answers will be generally very accurate. Any sort of critical analysis is beyond them, though. (Ether that, or I'm a mega-genius. Which....doesn't sound terribly likely.)

Of the "Top AIs", ChatGPT is good on basics but is incapable of any kind of detailed generation. Claude is brilliant at detailed generation, but overloads with anything but a tiny data set.

I've been putting up the projects on Gitlab for a while, so anyone who wants to see an AI break down and cry in despair is able to do so.

The secret tools don't bother me - they'll have long understood how to use Big Data and Analysis of Competing Hypotheses. AI isn't going to find out any more than combinations of those tools will, because that's basically all AI is - a Big Data classification system.

So you're telling Claude something vague and washy, then Claude invents a prompt that might vaguely possibly be somehow related to what you want along with a drink that is almost but not entirely quite unlike tea. Claude then recurses through this until it has a Celtic knot so intricate that it has its own Hausdorff dimension. What burps out is a product that is completely useless and patented to the Sirius Cybernetics Corporation.

They won't be OceanGate-grade. They used PRCF that had already been rejected by quality control. That's a non-starter in aircraft.

As production has ended, if the A380 is genuinely necessary, then the economics shift somewhat. That doesn't mean they CAN be replaced, from the sounds of it they can't* (at least in many cases), but the inability to replace the aircraft would mean that options that aren't rational become necessary.

*I have to be careful here. If the wing is designed to be the absolute minimum weight possible, then I don't see how they could be without fully disassembling the entire wing and then reconstructing it from the ground up. And adhesives/welding might mean that just can't be done. At all. On the other hand, there's no obvious reason why you couldn't design a wing to have far more structural support than actually needed AND make spars deliberately maintainable and replaceable. I don't have an A380 handbook in front of me, so can't say how Airbus approached this. But it seems improbable that they're built to be swapped.

Agreed. Also, nice to see another 3-digit UID user still on here!

[reaches for walker to stand up]

The Trash 80s? Had a Commodore PET 3032. A whole 1 megahertz. On the other hand, the IEEE 488 meant that I could send a command to one disk drive to transfer to a second disk drive, whilst printing, with the computer then totally free to actually do other stuff. SCSI it wasn't, but for the time, it was an ingenious solution to a lot of problems.

Sheer luxury, lad! Sheer luxury!

We had to make our own bits and push them uphill! Both ways! In the snow!