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Comment Re:CO2 as an indicator of air quality. (Score 1) 45

>"My HVAC inspector wanted to sell me a UV light air disinfector. It's hideously expensive for what it does. I declined."

Yeah, unfortunately, much of the stuff is WAY overpriced. It doesn't NEED to be, but they know they can charge it and get it because it isn't "mainstream". If there were a lot more demand, the prices would drop a lot.

At home, I use an AprilAire system with a large MERV 13 filter. It is not HEPA, but it is affordable and effective against tons of allergens and helps with other stuff. But to be more effective against viruses, you have to jump to much higher MERV ratings (essentially HEPA).

Comment Re:Not really new information... (Score 3, Interesting) 67

I continue to use burned DVDs for backing up the critical stuff. Not perfect, of course, but not electromechanically-failure prone like a hard disk drive, not "terms of service" failure prone like cloud storage, and not "the charge magically held in the gate leaked away" failure prone. I have optical discs over 25 years old which are still perfectly readable.

DVD-R? DVD+R? DVD+RW? Single or dual layer? Gold metallic layer? Silver metallic layer? How are they stored?

Depending on how you answer those questions, your 25 year-old media may be past due and you've just gotten lucky, may be just entering the timeframe where it may die, or may have decades of reliable life left.

DVD-R single layer disks with a gold metallic layer are good for 50-100 years. Other recordable DVD options are less durable, some as little as 5-10 years.

Comment Re: What they didn't say (Score 1) 37

And I wouldnâ(TM)t bank on a paid email account not being used for AI scraping.

In Google's case, they're under quite a lot of FTC scrutiny, operating under two consent decrees, and they have an employee population that isn't known for keeping their mouths shut. It's possible that Trump's FTC might not act if he were paid off, but a leak would definitely generate a lot of press.

Comment Re:CO2 as an indicator of air quality. (Score 1) 45

>"What can be done to help prevent it? Mask wearing might help some"

Barely.

>"along with sanitary other stuff - improve the ventilation in such buildings, including good filters, UV lights and such helping to sterilize the air."

This is what I have been saying for ages. Central HVAC systems need to run the fans full time and contain HEPA filters and UV lights. That could be a HUGE winner for airborne infection reduction. And it is completely passive. Couple that with air exchangers to reduce VOCs. But it does cost significant money.

Comment Re:What's that saying again? (Score 1) 37

"Never take any speculation as being confirmed until a statement of denial about it is issued."

In this case a false denial would put them in violation of two FTC consent decrees, and would almost certainly leak (Google employees are not known for keeping their mouths shut), so it would be a particularly stupid thing to do.

Comment Re:What they didn't say (Score 5, Informative) 37

Notice they said absolutely nothing about using it to target keyword ads at you, build profiles about you to target you with ads

Of course they didn't say that. They've always been open about doing that for unpaid consumer accounts, it's how they can provide the service for free. If you don't want your the ads, or for your data to be used, you can get that, starting at at $7 per month.

Comment Re:Adapted? (Score 1) 113

As well as the reactors, they've also got to get the heat-exchangers, turbines and generators down there too

Do they, or could that stuff be on the surface? Pump cold water down, get hot steam back up, run it through a heat exchanger/condenser, cycle it back down again. Or maybe something other than water. You'd lose some heat to the shaft walls, but that could be acceptable.

Comment Re:Shenanigans (Score 1) 113

Well false, and covered.

Firstly no, nuclear plants do not require daily maintenance. In fact the core / steam loops are largely maintenance free outside of planned shutdowns years in advance. Maintenance is usually only carried out every 24 months.

As to how, it's not exactly rocket surgery. This proposal just lowers two components to the bottom of a hole in a water column, just shut it down, cool it off (like you would do with a normal one), and then all you've got is the extra hour or so it takes to winch the thing up to the surface. It's not in any way buried or sealed down there.

I'm not talking maintenance of the actual reactor. I'm talking dials, valves, switches, even light bulbs, sensors, data collectors, etc. etc. And yes, that kind of stuff is on the daily "to fix" list. These are big complicated machines. You don't drop it in the ground and forget about it. They said they were going to run them remotely, which is really what I call shenanigans. Sure, you can put a couple of PCs anywhere in the world and "remotely control" any reactor, but you need access to all the piping, wiring, etc. and that means a big crew down under the ground.with the reactor.

I think all the maintenance-required parts you're talking about are where the heat is transformed into electricity, plus the safety-related monitoring of the core. With this design, it seems like all of the turbines, etc. will be at the surface, where they can be easily maintained, while the safety-related stuff just isn't an issue. Rather than designing a core that can be controlled and ramped up and down, with this system you'd designed the core to just operate at a continuous steady state for its operational lifetime until the fuel is used up, at which point you just fill in the hole.

You might make the core self-moderating so that if it gets too hot it will ramp down the fission so you don't have to worry about stoppage in the flow of water resulting in a meltdown or similar, but that would only be to reduced the likelihood of the core damaging itself before the end of its useful lifetime, not because there is any safety concern with a meltdown that occurs kilometers underground.

Comment Re:Good job (Score 1) 37

So how long before it can start to rewrite its own code to "improve" itself?

I'm only half joking.

Well, the LLMs don't really consist of "code" per se, but I think the AI labs are already using them to work on improving their own design. How far are they from being able to do this without human oversight and supervision? I have no idea.

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