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Elon's a general in the culture war being waged by your country, and you're asking why bearing his standard is seen as a political choice. I'd say that your question should be directed at Elon.

Likewise, Russian citizens are suffering the consequences of their leader's choices. They didn't vote to go to war, they were born there before the war broke out, but they're paying the price. I'm sure the people of Ukraine would love to live in peace and be left alone, but that choice was taken from them. And so they fight.

And since you own a luxury car, you can afford to get rid of it. It might not be a comfortable choice, you might lose some money, but I am confident that your life does not depend on you holding and using that asset. Serviceable used cars go for a couple thousand bucks. Really cool and flashy ones can go for ten.


Due to zoom's resource-intensity and my non-work laptop's dire lack of resources, I find myself using Lynx with some regularity today. I absolutely love it. Thanks, Lynx devs!

Not just one, though. We've sold a few to customers, not to mention the computers in our Burnaby lab that you can easily access through our cloud service.

It must be tiring to wade through the comments on these topics.

If I felt obliged to correct every single misconception I read here, it certainly would be tiring. Instead, I generally allow myself one comment and maybe a response. And that's not limited to work-related posts; it's how I budget social media.

Sage advice. If I may ask, what do you do at D-Wave? Do you ever think of switching to working on gate-based systems?

A very simple description of an FPGA is that it's got a bunch of switches on the ends of wires. Some of the switches can connect wires to logic elements and some can connect wires to other wires. In this view, programming an FPGA is just toggling switches so that some of them are "on" and the rest are "off".

The easiest migration from FPGA to ASIC is to just make a chip with the same circuit elements and wire segments, but instead of making switches, you just short out connections in the "on" state and leave the rest open.


Hot* take: -233 is too cold for Celsius. I'm okay with folks reporting critical temperatures in C once they get near room temperature, but this is only 40K (which is blazingly hot in my world, but regardless).

But, it's cool to see the boundaries pushed on the McMillan limit, and that figure with a lazy Susan of sputtering targets looks fun.

* pun acknowledged


I'm curious by what measure you suggest it's "too cold". Kelvin is an offset celsuis, so it's not like we're talking about an innapropriate order (like 10 000 000 grams vs. 10 tonnes).

I would understand if it detracted from one's understanding, but I think this format is more accessible than assuming everyone knows what kelvin are, and it's explained in the first sentence. This is journalism, accessibility to science should be lauded while maintaining brevity for , IMO.


Frame of reference. Kelvin immediately tells you the distance from absolute zero, which is at least somewhat relevant in this context. Celsius tells you the distance from liquid water which isn't very helpful in understanding the figure.

I think fewer people know the offset between K and C than the fact that 0K represents absolute zero.


For the layman, 0 degrees celsius is also a good proxy for the distance to "room temperature" superconductor.

-196℃ is another point of reference that might be familiar to people interested in, ehm, cold.

Nitrogen melting point. Essentially the highest low temperature at which you can cheaply do supercold stuff.

(I meant nitrogen boiling point.)

There’s another more fundamental reason to use Kelvin here, linearity.

100K is twice as hot as 50K, while the idea of twice as hot is meaningless in C or F.


Isn’t it the exact opposite? It you talk to people about something being “twice as warm” or “half as warm” people will assume you are talking about a scale in celcius or something closely related? Because it doesn’t make sense to say “the bedroom is freezing it’s 3/100th colder than the living room!” And no one saying “the bedroom is half as warm as the living room” will be interpreted to be saying that it’s -127 degrees celcius.

No I mean this in a physics sense, not ‘feelings’ sense.

If there is a physical phenomenon that depends on temperature, you can’t use C or F in that calculation unless the temperature parameters somehow cancel out.

So, if y = Tx, twice the temperature means y is twice if x is constant. But only if it’s in Kelvin.


In a “physics sense” there is no such thing as warm or cold those are language constructs not physical properties of materials. In physics there is temperature. You don’t say “the metal bar is 20 warm” you say “temperature is 20 degrees celcius” something having “twice the temperature” isn’t the same as being twice as warm or twice as cold.

I'm not sure if you got the point but I'll repeat. I am not talking about language.

40C is not twice the temperature as 20C, but 40K is twice the temperature as 20K.


You are using language and you seem to make an equivalence of temperature to warm/cold which doesn’t work. Now your saying that it only makes sense to use kelvin because it’s the only scale that doubles when you double it (which is actually also false they all do that). When in fact the concept of “twice as warm” is a fuzzy language construct which matches better to celcius. Which isn’t surprising as both the language and celcius scale are designed around our subjective experience.

> I'm curious by what measure you suggest it's "too cold".

I'm accustomed to thinking about superconductors in an environment on the order of around ~0.01K. And, it's worth spending a little time understanding absolute temperature. Take, say, Zirconium -- its critical temperature is around 0.55K. This new material's Tc is around 40/.55 = 73 times hotter. This perspective is useful if you're thinking about how much work it'll be to get something down to a given temperature. So you've kinda hit my complaint on the head -- it's precisely because temperatures of that magnitude don't make sense to me. And I'd expect folks reading phys.org to be unsurprised by temperatures reported in K.


I just googled "indium chewing gum" and was not disappointed.


I can't wait until highways and roads are carved up and sold to oligarchs. Every mile driven is a microtransaction (or maybe not so micro, if it's a monopoly). Maintenance is a major cost center, so they'll minimize that in a race to the bottom. Companies in disaster areas will simply fail, because insurance is expensive! It's such a beautiful system. I can't wait for this tax-free utopia.

Canada and Mexico will be happy to buy some of your failed states.


Wait? We’re anlready there…

All the new HOV lanes around DC are public-private partnerships with flex tolls that are paid by the mile. And have revenue protection for the private entity built in.


State highways are well maintained because the federal government demands it in exchange for significant funding derived from federal gas tax. You've had a taste of utopia, but you haven't bathed in it.

https://en.m.wikipedia.org/wiki/Highway_Trust_Fund


By banning "abortion" they've prevented doctors from providing adequate care for miscarriages. Politicians on the so-called "pro-life" side of this debate are stridently opposed to looking for a middle ground. Those excess deaths are entirely avoidable and utterly tragic. To the "pro-life" crowd, these deaths are collateral damage in a culture war. Death isn't the only extremely predictable (as in, we literally told you so) outcome, women who want to have children are being rendered infertile as a consequence of delaying treatment of miscarriages until death is an imminent risk.


> they've prevented doctors from providing adequate care for miscarriages

When this started happening, I expected to see a bunch of malpractice lawsuits but that doesn't seem to have happened.


The entire problem is that "Will this woman die if we don't abort?" is a judgement call, and expecting doctors to make perfect judgement calls 100% of the time or go to prison is just stupid. Meanwhile many of the rest of the states in the nation don't require you to do the impossible: Rather, just help people with your medical knowledge, and get paid handsomely to do so.

It's like making it a crime to cut someone open for surgery if you can't absolutely PROVE that they needed the surgery to save their lives, and then being surprised that doctors don't do surgery anymore. Any case even close to the grey line isn't worth your freedom over.


> expecting doctors to make perfect judgement calls 100% of the time

I expect doctors to provide the same care to my wife, mother, and daughters that they would want the women in their lives to receive.


You do understand the people pursuing this idiocy feel absolutely no guilt or shame, right? It's hand-waved away with "it's all part of God's plan". When you can blame some "higher power", you never have to take responsibility for anything, so there's no moral quandry to find yourself in.

It's absolute insanity, but it's reality.


They're claiming to have found a small number of microscopic particles that are superconducting at 500K, with details on how they found those particles. They acknowledge that making contact with those particles to directly test their resistivity is particularly challenging. That is, even if this is true, there's a long road between the discovery of microscopic particles and mass manufacturing / large scale integration.

It would be quite inappropriate for them to brag about revolutionizing anything at this stage. The field recently witnessed that with overstated claims surrounding LK99. Much more appropriate to publish methods and allow other groups to verify or refute their findings.


Back of the envelope calculations from the abstract: An 8-bit tiny pointer would be sufficient to reference an array of size 2^2^2^3 ≈ 1e77 (≈atoms in the visible universe) with fullness 31/32 ≈ 97%. Or size 65536 and fullness 63/64. For 16-bit tiny pointers, there's no point in going bigger than the universe; fullness goes to 99.98%. Like you, I'd love to see such an example worked out.


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