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Looking at how various places do 2FA, it's likely that at least some websites will not support multiple keys even if they ought to.

Also, I imagine that many people do not have the luxury of multiple devices. So if you lose your phone, you'll need to buy or at least borrow another iOS device to recover it from iCloud before you could switch to Android.

I'm assuming you're asking about ejecting the electrons and remaining positively-charge hydrogen ions separately, since keeping the hydrogen around would be a waste of mass.

I'm no expert at space propulsion, but I think this would have a few issues:

- Hydrogen has a pretty high ionization energy, even higher than Xenon

- As you said, static charge buildup

- Momentum = mass * velocity. Electrons have 1/1836 the mass of a proton, so for the same momentum you need a much higher velocity

- Imparting velocity is harder for low-mass particles because they tend to zoom off very quickly if not contained

Space is pretty empty. From what I can find, the interplanetary medium is around 5 particles/cm^3 compared to the exhaust from the ion thruster which seems to be around 10^6 particles/cm^3 and disperses to 10^4 particles/cm^3 further away.

Source: https://trs.jpl.nasa.gov/handle/2014/15643

"As the charge-exchange plasma density near spacecraft is at least about three orders of magnitude larger than the solar wind plasma density, the plasma environment of DS1 spacecraft is completely dominated by the charge-exchange plasma in the plume."

Walking is nice in that it's low-impact, although it's probably much more time-efficient to do a shorter, higher intensity exercise like running. (Saying this as someone who primarily walks and never runs)

My team has (not entirely consistently) tried to encourage people to use the "raise hand" button in the video call software if someone would like to speak. The currently person talking can either pause, or finish up what they're saying and then hand things over to the person who raised their hand.

I think more precisely, the traditional definition of an orbit (stable or not) is that it's influenced by gravity. You could be in a situation where the influence of gravity was negligible (say, far beyond any galaxy) but it wouldn't be considered an orbit at that point.

I guess certain multi-body situations like Lagrange points might make it debatable about which "direction" you're falling though.

I think many companies have a chicken-and-egg problem when it comes to cross-platform development. They already engineers for iOS/Android/Mac/Windows and there's established workflows for creating native apps for each platform, so cross-platform experiments are at an inherent disadvantage.

> You will go through multiple iterations to get your UX right.

For high-level UX flows, this is where cross-platform frameworks could have an advantage, because you can iterate without redoing the work for each platform. It might even make sense to use a web framework for the initial prototype and early user trials, and then reimplement in native for performance/details once it's finalized. As a bonus, if you're willing to maintain the web version you could use it as your browser-accessible version.

There's also some nodes that only work on the paid version (or add a watermark if you try to use them) and there might be restrictions on using OpenFX plugins.

IMO, Resolve Studio is pretty reasonably priced considering that version upgrades have been free for many years (unlike Adobe and others which cost hundreds annually), but it's not FOSS and there's still people for which a $300 one-time purchase might be too much.

I would actually pose this question another way. Absent the obvious political reasons (Cold War), did we go to the moon too early? The Apollo program was a combination of bleeding edge innovation (some of the first uses of transistors) and brute force (massive industrial efforts, orbital math using paper and slide rules).

Suppose that never happened. Suppose we had ICBMs and satellites but never felt the need to go to the moon or even develop human spaceflight. If we were to spin up a new space program today, we would be missing decades of human spaceflight knowledge, BUT we would have the advantage of modern robotics, aerodynamic modeling software, 3d printing, and everything else.

For that matter, we might have been able to go to Mars in the 80s if we were willing to "brute force" the problem (see von Braun's books). But maybe the smart move is/was to invest in other areas instead and wait for the progression of technology to make such endeavors more affordable, and by extension, sustainable instead of being a one-off novelty project like Apollo.

On the other hand, history doesn't exist in a vacuum. As expensive as they were, I think Apollo and the Shuttle got multiple generations interested in space; not just science fiction but the pairing of imagination with reality, so it's impossible to predict where the public (or even billionaire-class) excitement about space would have be without them.

In other news, death is not really final due to resuscitation, cloning, and ultimately, the theoretical reversability of time

Scammers have plenty of time to practice compared to the average person, and the face to face nature can make people more susceptible due to a false sense of trust / thinking that they can judge character over video.

OTOH it'll probably be harder for non-native English speakers to pull off a phone/video call considering that a lot of amateur scammers have telltale bad grammar even over text

Thankfully the vast majority of the public are crypto security experts and would have no problem applying these best practices to protect themselves when crypto becomes an everyday medium of financial exchange. /s

I assume it can already. The real test is whether it can write a story that people would enjoy reading (and not just as a novelty).

There's tons of basic research that could be done before we ever get to the regulatory question of human trials. If we could get pigs to live for 50 years (currently ~20) it would be a huge step forward in our understanding of aging.

On the other hand, pig life extension is not really a product you can sell. Even human life extension, which should theoretically be worth trillions if it works, seems like too much of a pipe dream. The benefits of basic research only become apparent years or decades down the road, and a lot of it is going to be dead ends.

Whereas it's pretty firmly established that if you can make a $700 smartphone that's slightly better than last year's, you can sell millions of them.

(Although apparently you can find a handful of people who want to inject sheep cells in their butt despite having no proven benefit: https://www.newscientist.com/article/mg15320660-500-germany-... )

iOS users see those too in SMS mode? In that case the Android users might actually have the cleaner experience after the latest update: https://arstechnica.com/gadgets/2021/11/google-messages-upda...

I get the impression that even without RCS, Apple could have done more to keep the experience usable for the iOS users in SMS fallback mode.

Apple doesn't sell apples or any other kind of fruit. That's my guess as to why Apple is an acceptable trademark for phones, computers, music (per arrangement with Apple Records), etc, but Snapchat's Spectacles trademark was rejected. The term for this is "arbitrary mark".

The recent NSO exploit using the PDF JBIG2 codec was also a hilarious example of abusing image formats: https://news.ycombinator.com/item?id=29568625

To nitpick a bit, my first thought was "how do HTML checkboxes detect light"? It'd be more accurate to call it a checkbox video renderer that uses a webcam as input.

From what I remember from Labmuffin's past articles, she doesn't give a specific nightcare routine because it varies based on the individual, so some trial and error is required.

Maybe that's a bit of a cop out, but if there were a perfect combination then there wouldn't need to be so many different products (marketing aside, even the same formulations of active ingredients are available as washes, creams, lotions, serums, peels, etc).

Designing and testing it would have cost them more than $5, but substantially less than $100M. Nice solution.

There's a way to save memory by sacrificing .hashCode() runtime performance (on the assumption that most objects never get hashed) by keeping a separate lookup table for hashcodes, at the cost of having to do the indirect lookup. I don't recall which VM used that technique. There's also fun tricks like rewriting/optimizing the object header during a copying/compacting garbage collection.

I think part of the reason the JWST took so long to build was the complexity of the design. As in, it was difficult to manufacture and assemble and test due to the way it was designed. It might be cheaper to do it a second time based on the lessons (avoiding mistakes) from the first, but it would probably still be quite expensive.

Looking at my order history, I had one in my RAID and RMA'd it 1.6 years later. The replacement lasted until 2019 (4.5 years).

I think their calculations are based on 24 hour days (1 hour roundtrip * 260 days). Vacations and work are based on 8 hour days, however, so in reality it's more like 30 days (6 weeks) of vacation time. And 30 minutes each way is much closer than most of the places I've worked.

It's portable though. A mobile phone has far less processing power than a workstation or laptop (and some are nearly as expensive) but it's also a fraction of the size / weight / power consumption / heat output.

On the other hand, they need to protect themselves from threats to their cash cow. Hardware and operating systems play a part in that, which is why Google needs Android to ensure access to mobile eyeballs.

Valve created Steam Machines as a hedge against the Windows Store becoming like the App Store (walled garden) but neither took off. Whether VR will become a major part of gaming is yet to be seen, although Facebook has invested heavily in their Oculus Quest ecosystem which does not require Steam or Windows.

Seconding the request for a source. The papers I've found say that SARS-1 survivors have antibodies that react to SARS-CoV-2 but don't neutralize the virus, and thus may not provide immunity.

So far the mRNA vaccines have shown strong effectiveness against the variants, but the others like AZ and the Chinese/Russian vaccines much less so. It's also worth noting that natural immunity is a somewhat random process (more random than the antibodies produced with vaccines) and not everyone develops the same level of protection.

Ah, that's reasonable. One issue with with the census questions is that they're mainly focused on defining a "household" and ignore situations like being in a relationship but living separately. But married + cohabitating should give a good first-order approximation of the non-single population overall.

Unfortunately, non-scholarly articles about dating pretty much always use the legal definition of "single", probably because deciding who is single in the dating sense is so tricky.

Could you be more specific or provide examples of a government census that asks about relationship status beyond legally recognized partnership situations?

I'm only familiar with the US and that data seems to be hard to come by. In the EU the European Social Survey seems to have pretty comprehensive questions although it's not from a government agency.

The problem with using government statistics (including the American Community Survey, as far as I can tell) is that "single" is roughly equivalent to "anyone who is not married", which is very different from "willing to date".

That means that people who are in a committed relationship but haven't gotten married yet, or perhaps never want to get married, are considered single. There are also people who are simply not interested in dating or relationships. Consequently, the dating pool is even smaller than the statistics would suggest (assuming we're not counting currently-married people who are in the dating pool due to separation, infidelity, or being in a poly/open relationship).