There's probably too much metal between the cargo hold and the passenger compartment for Bluetooth to work anyway. I think all actual bombs on aircraft (other than the failed shoe bomber) have been triggered by pressure switches at altitude or timers.

So it's not just that they wouldn't be stupid enough, but also that it probably wouldn't be successful even if they were.

I'm sure you're familiar with the countdown protocol, all the pre-flight checks, etc. These power up a range of subsystems, motors, etc, so that everything can be verified prior to ignition itself. The complete sequence takes a very long time. Under normal flight conditions, you can't check for absolutely everything (instrumentation is mass, and mass is the enemy) but there's still a lot. However, during an engine test, you can pack a lot more sensors in.

This is where you'd want to be spotting loose connections, pumps that aren't quite even, pressures that aren't as steady as they should be, vibrations that shouldn't be there or do not match expectations, turbulent flows, and so on.

At ignition, it takes between 3-6 seconds to go from stopped to 90% thrust. For humans, that's near-instant. For a computer sensor that's operating a million samples per second, that's 3-6 million readings. A computer performing a billion calculations per second shouldn't have much difficulty in comparing 3 million readings against model predictions and determining if both the values themselves and the rate of change at each point such a sensor exists are all good. Emergency shutdowns during those first 3 seconds are perfectly viable.

Vibrations are the ones that are likely the most interesting, because those are likely to change before something breaks, not sure how fast you can make infrared sensors, but that's also an area where things are likely to alter before point of failure.

Lazy, yes. Bright, no. If you can't trust the average person to figure out that bread that's loaded with salt and sugar isn't healthy, then you can't trust the average person to figure out what a healthy balanced meal is.

The evolutionary pattern was created because food was unreliable and energy demands were unpredictable - but high, due to the large brain. (Possibly larger than it is today, but there seems to be conflicting data there.)

Now, rationing extreme energy foods is certainly one option, but it's not a particularly satisfactory one as the energy demands vary by profession and by time within a profession. You simply can't predict what people will need and there's no way to standardise this.

There is a second option. Intense focus is impossible for beyond about 45-90 minutes at a stretch, or for more than 3-5 hours in a day. Meetings degrade intelligence, according to psychological research, so you want to minimise those. After about 7 hours, work will mostly have negative value. If you increase the amount of high physical activity for at least an hour a day (and potentially longer if the amount of soft work is minimal in the job) then you will improve physical fitness and general health, without having to substantially alter diet. However, that still only gets you so far, because a poor diet still impacts physical and mental health, and can lead to brain decline. (It's a big factor in poor brain health in children in schools.)

A third option, then, is to actually improve meal quality in schools and for workplaces to work with the food industry to provide cheaper/easier access to high quality foods that actually taste good, not merely sensible energy foods. This would seem to be target solution, with in-work exercise to supplement it.

If that turns out to be the case, we get to find out something about what reshaping the brain means.

Whilst that is perfectly true, it is questionable as to whether it is useful or necessary. If a rocket is being tested, then logically it should be heavily instrumented. If it's heavily instrumented, and the instruments are themselves competently designed, there is no obvious reason why the engine can't be auto-cut when problems start to arise. And they will have arisen long long before the explosion.

The values may have independently been "within permitted range", but if the pattern of those values doesn't make sense, then something has gone wrong. There may well also have been subsystems that were insufficiently instrumented.

"They're the experts" is often an irrelevancy - we lost TWO shuttles and crews to political decisions, when the experts on the ground were ignored. DeHavilland lost endless Comets to basically the same blunder, when political decisions by management over the reality of metal fatigue overrode analysis by actual experts. Improper monitoring and inadequate computer controls will be from a burden of costs and time (both political constraints, not engineering constraints). As, indeed, will improperly manufactured parts, improper software (anyone rememebr Arianne IV's mishap due to buggy software?), improperly-defined constraints, and inadequate quality controls.

The experts are usually either well aware of mistakes or afforded no means of detecting them.

I see no reason not to think this was anything other than a management blunder.

My house is a relatively normal size (1800 square feet), and it still takes more than three full minutes for water in my shower to reach full temperature when I run it straight hot. If I also turn on both faucets in my bathroom, I can get that down to about twenty or thirty seconds, which is barely tolerable.

At my mom's house in Tennessee, the distance the water has to travel is comparable, but it takes only ten seconds or so.

It's a huge downside to all the water-saving showerheads and faucets that were forced upon us here in California decades ago. We waste a lot of time and energy to make up for a water shortage that exists only because of decades of politicians being short-sighted and kicking the desalination can down the road over and over so that the money doesn't get spent on their watch.

If you're willing to settle for only $30 million, that should be enough to obtain a birth certificate and proof of residency in some remote village.

He told his Ferengi superior that he could keep the latinum.

This raises a very important question. If the CIA are taking shortcuts and making assumptions about anything, we should not be making assumptions ourselves that the CIA aren't doing the same elsewhere. I am, however, still waiting for biolabs and WMDs to turn up in Iraq - something for which they appear to have ALSO taken one person's unsupported word for. They also ratted out their own officers in retaliation for questioning the existence of "yellowcake" (that turned out not to exist).

I'd be wary of claiming there was a pattern, but... They do seem awfully incompetent.

Translation: A company that has the potential to benefit from regulation by squeezing out competitors wants more regulation.

I'm not saying they're not right, just that it seems awfully convenient for a company specializing in pumps that recirculate data center water to want efficiency regulations that would push customers towards their most efficient (and thus presumably most high-margin) pumps.

Instead of having your hot water fan out in a tree, you wire it like a token ring with a return pipe, where each faucet only has a short bit of pipe between it and the ring. Then, you have a pump to circulate hot water through the ring-shaped pipe network. That way, it takes half a second to get hot water instead of half a minute or more.

Sure. I'd imagine most hardware vendors will want it. I'm just saying that the wording, at least as described in the summary, is... problematic at best.

Agreed. Deliberate adding of surface roughness (and even multiple surfaces) have been used in racing yachts for many decades. I think they started doing this in the 90s.

Not really. It's more like requiring all vendors who sell cash registers used in restaurants to support checking photo IDs because some restaurants also serve alcohol.