Then, just don't buy Chinese cars. Or, be ready to take responsibility for using a car with known safety problems.

According to Wikipedia:
IPx7: Immersion, up to 1 meter (3 ft 3 in) depth
IPx8: Immersion, 1 meter (3 ft 3 in) or more depth ... Test duration: agreement with the manufacturer, Depth specified by the manufacturer, generally up to 3 meters (9.8 ft)
IPx9: Powerful high-temperature water jets

World Aquatics specifications for an Olympic-size pool are as follows:
Depth: 2 m (6 ft 7 in) minimum, 3 m (9 ft 10 in) recommended when using the pool for multi discipline.

So, "generally" IP68 devices should survive swimming pools but the depth and time depend on the manufacturer.

It probably is safer than CO (that is really unsafe).

I think it could be used by paramedics (or by anybody who can make an intravenous injection).

No. You need to infect quite much of antidote into the blood stream. Intramuscular injections (like epipen) also won't work.

1. After the protein molecule reaches a red blood cell, it probably works equally fast for mice, humans and elephants.
2. For humans, it takes about 20-60 seconds for blood to complete a full circuit of the body. 1-2 cycles should be enough to mix the antidote with the blood quite well.
3. We need one more cycle because CO-free red cells need to reach lungs to get O2 and then reach the brain.

https://edition.cnn.com/2021/1...
December 10, 2021: US small arms and ammo arrive in Ukraine as Pentagon details troops to train country’s military

They refused to promise not to do it in the future. They also allowed several ex-SU countries to join NATO and are hosting weapons in ex-Warshaw-Pact countries. So, hosting weapons in Ukraine is the next step that Russia could expect.

It's not about nuclear weapons only. Ukraine could attack Crimea with non-nuclear weapons.

I'm afraid this discussion is getting too wide. I propose to return to Ukraine vs Cuba comparison.

In general, I do.

Like Cuba, Ukraine decided to be a threat to their neighbor. Unlike Ukraine, Cuban crisis had been resolved without war because Soviet Union agreed not to host their weapons in Cuba. Unfortunately, US didn't do the same in 2022.

Also don't blame communism or SU for the world instability, please. The world was "unstable" long before SU was created and it is still "unstable" long after SU passed away.

1. Ukraine has never had nuclear weapons under their control. Some bombs/warheads were stored there but they were unusable without secret codes controlled by Moscow.
2. There are lots of claims to Ukraine from both Russia and China. One of them is that Ukraine was unlawfully consuming Russian natural gas. Another is Motor Sich company that was bought by China and then nationalized by Ukraine.
3. Unlike Ukraine, problem of Soviet nuclear weapons in Cuba was resolved without war after Soviet Union agreed not to install their nuclear weapons there.

It's not only about money and development time, it's also about mass (AKA weight). You can only deliver the specific amount of equipment to the Moon by one rocket launch, and no more. If you add an arm, you have to remove something.

A refurb phone may be a good choice for a smart person but they will never get a significant market share due to limited supply.

"Ultra-fast" means, according to the article, 350 kW. All these 400 chargers will be able to give 140 MW of electricity. Caloric value of gasoline is about 45 MJ/kg. So, all this power is comparable with 5 liters of gasoline per second. Standard fuel pumps are able to give 50 l/min. So, all these "400 ultra-fast chargers" are equal to 6 standard fuel pumps or one small gas station.

It may not be easy to find a new job while being on call 24/7 and having no free time. This law will protect employees while they are trying to find a new job and break toxic relationships with their current bosses.

In 30 years, how many times did you start a new C project from scratch? If never, it's not a surprise you didn't have to reimplement everything because other people already did it for you.

The main news here is that Russia does package CPUs, and about a half of them are good.

To prove that fingerprints are not unique, we don't need "AI-based studies". We need to find two different fingers with identical fingerprints.No more, no less.

7,859.05 MHz means just 3.8 cm per cycle at the speed of light. It's less than the physical size of the CPU (37.5*45 mm). Amazing.