Oh how I yearn for the days when /. wasn't pushing right-wing rubbish and just let the tech talk.

Do we all really expect people to be uber-kernel-codes from zero-day? [;)]
Is this yet another beat-up article? Similar to the "Chinese hackers attacking Covid-19 research" article.

Beware of propaganda from all factions.

May as well resign ourselves to the reality that we have to learn to live with this.
Give up on the futile "Lockdown"; the genie is out of the bottle.

* Bolster healthcare.
* Improve aged care homes.
* Hygiene education.
* Increase interpersonal distance spacing for pubic transport and spaces.
* Masks mandatory in public until healthcare can handle the load.

The rest of the world can just "Move along... nothing to see here..."

The old and unwell had very little milage on the clock; yes there are outliers but generally this is turning out to be a bad flu.

Hoped that "they" would have implemented it this way but it seems they may not have.

An algorithm that would greatly improve, if not outright eliminate privacy concerns all the while being very low load on the server / bandwidth might be:

"The App" on "Your Phone" using Bluetooth low power, signal strength for distance filtering for 2m / 6' or less.
Unique serial number generated on "The Server" and registered to "The App" on "Your Phone".
"The App" constantly registers connects & disconnects with "Other Users" over Bluetooth &
            timestamps and stores "The App"s database on "Your Phone".
If any user ever gets a confirmed SARS-CoV-2 / CoViD-19 diagnosis, that user notifies
          "The Server" through "The App", with an official "Notification number" (if that exists).
"The Server" pushes or publishes "The Infected Serial List" or a delta thereof for "Your Phone" to access regularly.
"Your Phone" compares "The Infected Serial List" against the stored contact database that is in the "Your Phone" and...
      if there is no match then great.
      if there is a match then alert the phone user about the date/time of contact and duration/distance.
                Using this data the "Your Phone" can generate a rough risk scale and suggestions for remedy:
                          testing centres, help-lines, govt website links, suggested immediate measures for containment.
                It is up to the device owner to action any alerts which is not ideal but better than nothing.

Not too complicated, not to heavy on resources, not too invasive WRT privacy, not perfect but better than nothing.

If I repeat a mantra often enough... people seem to bend to whatever I say.
(Microbes aren't quite as gullible unfortunately...)

...and far far away. What's ancient history to Kirk?
Anyway, it's not a helmet, it's a mask; we're all supposed to wear such things, no?

I treat all products as hostile... you should too.
But I suspect you may already know all this... ;)

...America will try dissuade you from buying it.

The joke is wearing a bit too thin guys.

It's easy to beat up on the big guys; well figuratively speaking, we all know we're dweebs if we're real slashdotters.

Yes, I've though about this a lot...

A bluetooth model that doesn't transmit ANY information out to Apple & Google (A & G) and only logs on your device the presence of other passing bluetooth devices (serial number exchange only) seems like an entirely workable and relatively safe system. The initial registration and the potential "Oh no! I have been diagnosed with the novel corona virus!" are the ONLY things that need be transmitted to the server, EVER. No need for GPS or any other form of location system, just collect bluetooth connects-disconnects on your device for a month in a circular queue. Compare your list with the list of "sick serial numbers" that are broadcast or the app can pull it occasionally. If you've had exposure... it's up to YOU to respond; though the "sick serial" device will know that they connected with you from their device's "circular monthly queue of connects".

This may not be the way A & G have set it up; a user activating the "Oh no! I have been diagnosed with the novel corona virus!" alert may potentially upload their "bluetooth interaction log". This would then give A & G the sick persons interaction list... this is a potential privacy incursion; A & G really should define exactly how their system is set up. This isn't needed by A & G; trusting the user to get checked out should be good enough and is certainly better than nothing.

A & G may have done the correct thing; there is no magic bullet with tech but this potentially does seem to be about as good as it gets.

That seems to work rather well, assuming that's what this article is about.
(Note to self: RTFA! :)

...I'm sick of my wife beating me... (except when I'm handcuffed for some reason).

It doesn't take a mastermind to look at the US health system and see that it's been monetised beyond ludicrous mode.
However it's been a great example to the world of what not to do...

Researching & answering some questions:

> What's the total efficiency throughout the whole process?
At best 20%, most of the waste is heat, just like petrol & diesel.

Q: The combustion chamber will have hight temperature steam in it, is corrosion or knocking an issue?
A: As pointed out, normal ICE engines also release some water vapour already, just not 100% like hydrogen.
Petrol: 13%, Diesel: 11%
https://en.wikipedia.org/wiki/...

Q: What's the efficiency of burning hydrogen? I can't think it would be high, around 20%? Mind you fuel cells are only ~50% efficient.
A: Hydrogen operates at thermodynamic efficiency level of around 20–25%
https://www.forbes.com/sites/q...

Smelting Aluminium:
typical current efficiency of Hall–Heroult technology is 90%
https://www.mdpi.com/2071-1050...

What percentage of the operation time is on hydrogen?
Can the engine support constant hydrogen without cutting back to fossil fuels?

The combustion chamber will have hight temperature steam in it, is corrosion or knocking an issue?
What's the efficiency of burning hydrogen? I can't think it would be high, around 20%? Mind you fuel cells are only ~50% efficient.
What's the total efficiency throughout the whole process?
What percentage of the operation time is on hydrogen? Can the engine support constant hydrogen without cutting back to fossil fuels? Things I've seen require fossil fuels to run a goodly percentage of the time to "oil coat" the system throughout internally... to minimise corrosion.

I do like the quick load pellet idea without the high pressure tanks. Not knocking the thing... the pellets could be used in conjunction with a fuel cell in theory... could be good for shipping or rail.

Aside:
We electrolyse aluminium here in NZ but it's using a dam specifically built for it... and the price of aluminium is plummeting so we might unplug the smelter and plug our cars into it. Need to upgrade the HVDC backbone but that's overdue and easily done now (we we the second to do it).

People are stupid hypocrites.
I'm pretty sure half the population is of below average intelligence...