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Comment Re: Characters. (Score 1) 331

But it only needs to make enough power to pay for itself, not to beat some hypothetical efficiency.

You've provided the absolute minimum criteria for adoption: don't lose money over a long period of time compared to doing nothing.

There are far more positive levels of motivation, like ROI going positive in a small handful of years, which is what I understand solar is approaching. As a home owner, what are you going to do with some tens of thousands of dollars, put it in an investment fund where it will earn 3-7% annually, or put it into infrastructure that will slowly rise from net negative up to 0% over 30 years? For infrastructure to make sense financially, the picture is often substantially worse than people selling alternative strategies to grid power imply in their analyses.

Comment why white? (Score 1) 121

Why is it painted white? Why not paint at least the top and sides black to absorb solar radiation and help with lift? Does it make control too difficult because there are different lifts in the day than at night? Why not then use hot air, so you can take advantage of solar-driven lift, and not deplete helium resources in a stupendously misguided way? Punt the photovoltaics idea that others have mentioned and just absorb the photons directly, purely for lift. If you need additional PV panels for drive, fly them as wings.

Comment Due dilligence? (Score 1) 138

A five second Google search identified at least one other AI product and company called Grok. It would be reasonable to expect that among them, there's a registered trademark. Indeed, a few more seconds looking at the USPT trademark database reveals that there are a number of live claims on that term, with xAI's being the most recent. Some of those live claims are most definitely AI-related.

It sure looks like someone didn't do due diligence, or are expecting to bully their way to ownership.

Comment Re:*Could* be a killer app, but isn't (Score 2) 273

* Call button for waiter, instead of the constant interruptions with "is everything allright?"

(emphasis added)

That is a distinctly North American (maybe just US) cultural phenomenon. Travel elsewhere, and you'll find that he waiter will not periodically interrupt your meal, but instead, you need to call them over when you want service. If the place is even halfway decent, the waiter will be there very shortly.

I strongly prefer the latter.

Comment still there in LTS (Score 1) 78

Here's the actual, more complete merge comment:

The ia64 architecture gets its well-earned retirement as planned,
now that there is one last (mostly) working release that will be
maintained as an LTS kernel.

So it isn't like kernel support is going completely away. It just won't be included in future releases.

Comment Re:um, not really (Score 1) 214

Following-up on that idea, I also dislike mid-week conferences because it means a much higher burden for my spouse, as they must now take the kids to and from school, lessons, afterschool sports, appointments, help with homework, etc, a responsibility that we normally share. Weekend conferences are much less of a family burden because there are fewer family responsibilities during the weekend. Furthermore, it is usually far easier to get help from family or friends on the weekends than during the week. So, again, weekend conferences are preferable, not a tool of oppression. Sheesh.

Comment um, not really (Score 5, Interesting) 214

My credentials for the following opinion are that I have attended international scientific conferences for about 4 decades now, and have run my own international conference for 2 decades.

Conferences are typically scheduled so that the travel can span a Saturday night and therefore take advantage of lower airfares. That is the long and short of it. There are conferences that are scheduled in the middle of the week, and, usually, travel to them is much more expensive. I just attended one in Germany that was like that: Monday and Tuesday, and the tickets were, literally $1000 less for me if I arrived on Saturday rather than Sunday. So, mindful of my research dollars, I arrived Saturday and paid for an extra day in my hotel, saving most of a kilobuck. That recent example is typical for mid-week conferences, which I personally dislike.

The summary's assertion that weekends are the only times these venues are free does not jibe with my experience scheduling conferences in the least.

Furthermore, there's no one preventing conference attendees from not taking "rock star" flights, but arriving early like I just did in Germany. For my meetings, I actively encourage people to arrive a day early, because they usually come from all across the globe. When I go to a meeting, I *never* arrive the day it starts -- what happens if your flight is delayed or cancelled, as happens with non-trivial frequency?

As far as day care, my employer provides financial resources for extra expenses when attending conferences. Many meetings offer day care for a very reasonable rate as well. If you take NIH money to run your conference, you're required to provide day care options.

So, this posting sounds very much like a hit piece from someone with an axe to grind.

Comment 30 / 60 minute advertisements (Score 1) 43

There are a lot of nay-sayers, and even TFS is pretty clueless about the idea.

Think of each of these shows as 30 or 60 minute advertisements for a given restaurant, theme park, etc., and it makes a lot more sense.

The prime example? Cheers, the television show, was an advertisement that ran for many years for the bar in Boston's Back Bay. So successful a campaign that other Cheers-branded bars were opened. Someone's going to point out that the branded bar in Boston (not the original) has closed; yes, true, after 20 years in business. That's not bad for a cash cow; moreover the closure was in part because of the pandemic.

Ok, now doesn't that make more sense from a different perspective? And, if even a little successful, can't you imagine that new Netflix shows will be designed as marketing tools for a brick-and-mortar experience?

Comment Re:BUILD ONE! (Score 1) 77

That blog post is thirteen years old. The trick nowadays is getting the male ADC connector, which are no longer available. Making a new one would be very hard without the proper tooling or some expensive prototyping machines.

From what I could find, the ADC connector looks like a normal DVI connector with a different shell, and some latching. Given that the shell doesn't need to be 100% intact in order to function both mechanically and electrically, it wouldn't seem such a big task to modify a DVI connector to fit ADC for someone who is able to rewire them so the signals match. Without one to try it myself, it sure looks like if you cut off the short ends of the shell, and maybe nibble off a little more, put a crease in the middle of the upper long side (or just cut out a strip there), a DVI plug should mate up to an ADC socket. The latches are likely to be purely mechanical and their absence shouldn't affect operation. For a sufficiently motivated tinkerer, the modifications should be doable. Am I mistaken?

Comment Re:What about community solutions? (Score 1) 77

For one solution, someone designed and ordered small custom circuit boards that are the same dimensions as the old 40-pin chips. The board is populated with a FPGA and other chips and plugs into the socket for the GTIA graphics chip. The FPGA re-implements the chip it replaces and the board includes a header for wires to a DVI connector.

This, exactly this, is the sort of stuff I want to read on Slashdot. That project sounds like a serious technical and engineering challenge, and I'm duly impressed that someone managed to pull it off.

Comment Re:Negative charge/spin don't give negative mass. (Score 1) 109

The summary was pretty clear on that, and there's an upthread comment that explains it reasonably well.

The plain and simple fact is that we had not, until this experiment, actually observed anti-matter's interaction with gravity. Because electrical and magnetic fields are so much stronger than gravity, we needed neutral bits of anti-matter to test gravity, and the easiest way to do that (which is by no means easy) is to create a bunch of anti-hydrogen (a positron bound to an anti-proton) suspended in an absolute vacuum, and watch what they do as we remove the suspension. I am not familiar with the details, but on the face of it, that sounds like a technical masterpiece of high-energy research.

Just because you THINK the result of an experiment will come out a certain way based on educated guesses does not mean Mother Nature agrees. Empirical testing is absolutely necessary, always better than thought experiments, and often leads to interesting results.

Like Dark Matter. No one in their right mind would ever have imagined that Mother Nature would be hiding the vast majority of stuff in the universe from us. And yet the empirical observations of the movement and distribution of galaxies appears to reveal our hubris.

Comment Re:get killed by an explosive charge instead (Score 1) 196

I guess you're not aware of that standard mechanism for rapid removal of securing devices? It's used frequently all over the place. Typically, the bolts themselves contain the explosive in a hollow core that, when detonated, cause shearing along an engineered plane of the fastener. The most common use is in spacecraft, but there are other instances, like military aircraft and the power delivery industry. See "pyrotechnic fasteners".

Comment Re:Move fast and break things (Score 3, Informative) 196

You forgot things like, "add a failsafe escape mechanism to explosively open the bolted-on-from-the-outside hatch so that if the sub surfaces with failed communication, the passengers don't slowly asphyxiate in a sealed container bobbing on the waves because no one knows where they are."

Or, "build a sphere instead of a cylinder because spheres are stronger."

Or, "use a viewing port that's rated to the necessary depth instead of one rated for a much shallower level."

Or, "design a reliable communications system with the mother ship."

Or, "include a locating beacon."

Or, "don't use carbon fiber in a design that puts it under compression."

Or really stupid things like, "add comfortable seating that normal people will be able to use for extended periods."

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