They could make a note of mileage leaving and re-entering the UK.
Penalty for misplacing the documents would be paying for all the miles.
Or keep it in a database for tax purposes.

Lots of "cute" answers I see. More seriously, the FAA is involved because it involved a flying thing. FAA regulations are designed for flying stuff, and wants a high level of safety.

If a self-driving Fedex truck did what you described, the DOT would likely become involved.

It's probably overkill in most people's homes. However, it may be more valuable in a commercial setting, such as a convention center or hospital. Cutting down on the crud even by a small fraction could be worth quite a bit.

In Portugal we have a $10 billion datacenter being built by Microsoft where a large thermal power plant used to be... it uses sea water for cooling just like the power plant used to. Beachgoers love the warm water. Sea water is not exactly scarce and there's no shortage of shoreline in Malaysia...

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.

My new PC boosts instantly. What are they trying to improve? With oodles of RAM and absurdly fast SSDs there is nothing slow about a computer these days.

Indeed. My thought was that CO2 levels could roughly correspond to the number of people in the specific room, offset by actual ventilation levels.

IE more CO2 = more risk because it means more people with inadequate ventilation.

Conference crud is really simple. Hacker or not. You bring in hundreds/thousands of people from around the country and world, exposing most of them to even more potential disease carriers on airplanes, trains, busses, and more, then disrupt people's sleep and disgestive tracts with unfamiliar locations, schedules and food and you have the perfect melting pot to get people sick.

What can be done to help prevent it? Mask wearing might help some, along with sanitary other stuff - improve the ventilation in such buildings, including good filters, UV lights and such helping to sterilize the air. At the same time, improve air quality otherwise, because harsh cleaning chemicals can also make people sick.

In the markets, if enough people believe in the correlation then it magically becomes a causation.

I dug into the sources a bit. Apparently they were excluding white neighborhoods from checks, then somebody else was removing non-asian names before forwarding it for further investigation.

source.

Looking into the sources and tracing a bit:

source.

If they actually did this, well, that's like how the NRA forced most "may issue" states to be effectively "shall issue" for various weapon permits.

When the police can't come up with a good reason for denying the black woman's permit request when she has letters from a ex-boyfriend stalker threatening to kill her, who is due to be released from prison soon, but the white doctor living in a gated community gets it first thing, there are questions to be asked. Especially when permits for black people have a 99% reject rate while whites get them 90% of the time.

Just to be clear, I believe that part of the problem was that the city government was broke and basically in receivership. Ergo, the politicians in Flint were not actually in control of the water contracts, it was an emergency manager appointed by Governor Rick Snyder(R).

I remembered the broke part and not in control, looked up the specifics.

Basically, to cut costs, the manager stopped the practice of piping water from Detroit and started using the historically very polluted and corrosive Flint River, without adequate testing and treatment (itself actually a violation of federal law).
Because many of the homes still had lead service pipes, going from basic to acidic caused the protective oxidization on the pipes to dissolve, putting excessive lead into the water.

It eventually made national news, but by all measures, this is still a far better situation than what Tehran is facing.

Switching back to the old water source or adding more controls like running the water through a filter of crushed limestone to correct the PH fixes the issues in Flint. No such easy solution is possible for Tehran.

Sorry, I didn't get that quite correct, they're Passive Autocatalytic Recombiners. They require no external power.

It wasn't just the generators or sea wall. Another one of the problems is that they never installed the hydrogen reformers designed to burn off the hydrogen buildup from an overheating core safely.

As recommended by the reactor manufacturer and installed on US plants.

There would have been a lot less boom with them installed.

If the hardware is still present, but is disabled, you're still carrying around the hardware. Most importantly, you're probably still powering its logic even if it's inaccessible to you.

BMW, like most German cars, is overcomplicated and overpriced garbage sold only to self-proclaimed car enthusiasts who wouldn't know how to change a tire let alone a timing chain. BMW got themselves into a bit of controversy by including heated seats which only functioned by subscription.

Now, say I had bought a BMW but didn't want the heated seats. I don't pay for the subscription. There's no additional cost to me, the purchaser of the car, because the profit from the people who do opt for the subscription are the ones paying the cost of the extra hardware in my car, correct?

Wrong. I am now carrying around an extra-beefy alternator to power the heated seats. I am now carrying around all the extra wiring to power the heated seats. All of this impacts my performance and my fuel efficiency. And all of this extra complexity adds a failure liability when something damages part of the heated seat hardware. All for a feature I specifically did not ask for by refusing the subscription.

With a disabled chunk of logic embedded in a processor, is it a negligible cost and a negligible risk? Maybe, but as the purchaser, it's crap that I didn't ask for, and you are imposing on me. If I have to carry it around and power it up, I expect to be able to use it.

If the manufacturer doesn't want to supply a feature then they should not supply the hardware. Leave the spots on the circuit board unpopulated. In the case of a chip, leave it off the die.

1. You have a point. Current reactors are around 30% efficient because they have to have liquid water to cool the reactor, and there are limits to that even with very high pressures. Thus carnot cycle limitations apply. It basically means that a nuclear reactor has to produce 3GW thermal (GWt), to produce 1GWe, so it has to exhaust 2 GWt as waste. Increase the temperature to the point you get 50%, and suddenly you only need to generate 2GWt to produce 1GWe, cutting waste heat in half. A much easier problem to solve at that point.
2. As you identify, there's a limit to what you can dump into the Earth. It just transfers heat too slowly to be practical in most situations. It's actually a problem I ran into when looking at geothermal heat pumps up north, like North Dakota and Alaska. You can actually end up cooling the earth so much as to lose efficiency or effectiveness over time. You might actually want to run some solar thermal panels and pump heat into the system during the summer. Between it being one of the more expensive options and actually less effective than air cooling, it isn't on my standard list.
3. Salt vats would still be a form of air cooling. Better options might be to list waste heat scavenging for zone heating or other industrial purposes. For example, it could be used to help dry new lumber, paper, fabrics, and food (dehydration). Laundries could use it for hot water for washing. Greenhouse heating, and aquaculture.
4. Micro-reactors still require cooling as per the above, and aren't actually in production right now, sadly.
To be clear, I'm not fixated upon large WCRs. I was just looking at the water-cooling restraint many fixate upon.