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Comment Winner of the Pulitzer (Score 3, Interesting) 39

Soul of a New Machine is a really fun book from the standpoint of the technology and culture of the time. But let's not forget it was widely regarded as just awesome writing: it won the Pulitzer and the National Book Award for nonfiction.

Tracey Kidder also wrote Mountains Beyond Mountains, about Dr. Paul Farmer and the work of his medical non-profit Partners In Health. Another excellent read.

Comment Weapons of Math Destruction (Score 4, Informative) 65

These kinds of poor outcomes were described thoroughly in the book "Weapons of Math Destruction" by Cathy O'Neil. She cites examples in bail / parole recommendation algorithms, HR screening tools, insurance, etc. In her view, a WMD is a computer system that has some/most of these characteristics:
* that makes serious decisions affecting people other than the person using the tool,
* uses proxy measurements (zip code, socioeconomic status) for the thing they're actually trying to quantify (e.g., risk of recidivism),
* whose inner workings are opaque, and/or built on data of unknown provenance,
* are not or cannot be corrected in light of new data or mistakes,
* are difficult or impossible to contest,
* have little to no regulation.

That was published in 2017, well before LLMs and AI really hit the scene. But the dangers were already apparent even then, and f*&k-all has been done to mitigate them.

Comment Re:Color me skeptical. (Score 1) 310

Large amateur rockets can achieve >Mach5 , which qualifies as hypersonic. You could probably build something like that for
You couldn't build, transport, and launch one for that kind of money - the ground infrastructure and permitting would be onerous and expensive.

Nor do amateur rockets carry munitions in hypersonic glide vehicles. So that part is worthy of skepticism.

Comment Re:Illegal (Score 4, Informative) 73

In case anyone is curious, this is illegal.

So is launching a war in Iran without Congressional approval. So is cancelling funding mandated by Congress. So are foreign gifts, emoluments, and self-dealing. So is federalizing the National Guard on false pretenses. So is putting a sitting president's mug on a coin. And yet...

Comment Re:Really? (Score 1) 44

Ah, just remembered, "maximising shareholder value" is a sort of value.

"Greed...is good. Greed is right. Greed works. Greed clarifies, cuts through, and captures the essence of the evolutionary spirit. Greed in all of its forms - greed for life, for money, for love, knowledge - has marked the upward surge of mankind. And greed, you mark my works, will not only save [OpenAI], but that other malfunctioning corporation called the USA. Thank you very much." [ref"

Comment And nuclear propulsion (Score 3, Informative) 73

Missing from the summary is this tidbit:

NASA will launch the Space Reactor1 Freedom, the first nuclear powered interplanetary spacecraft, to Mars before the end of 2028, demonstrating advanced nuclear electric propulsion in deep space....
When SR-1 Freedom reaches Mars, it will deploy the Skyfall payload of Ingenuityclass helicopters to continue exploring the Red Planet. SR-1 Freedom will establish flight heritage nuclear hardware, set regulatory and launch precedent, and activate the industrial base for future fission power systems across propulsion, surface, and longduration missions.

So, a nuclear-electric tug between Earth and Mars, and more helicopters on the red planet. That seems 1) much more likely to happen than the lunar base plans, and 2) very exciting technologically.

Comment Chandra is a marvel (Score 5, Interesting) 27

Let's bear in mind that Chandra has been in orbit for over 25 years. Not quite as long as Hubble, but from the same era. Unlike Hubble, it was not made for servicing or upgrades - it's the same hardware that Columbia launched in 1999. At over 20 tons, it was the heaviest payload every launched by the shuttle. And folks reckon it has at least ten more good years of operation ahead of it.

Comment Security concerns my butthole (Score 4, Informative) 180

The fact that they reference a bunch of past breaches and supply chain attacks - but give absolutely zero explanation about how said attacks would be prevented by US manufacturers, nor any explanation of additional cybersecurity controls they will mandate on them - tells you everything you need to know about this.

This is about protectionism, not cybersecurity.

If it had to do with cybersecurity, then a set of objective evaluation criteria could be applied to ANY router, regardless of origin.

Comment Re: Potential dangers (Score 1) 92

Firstly, I see you have this notion that martian rocks must all be igneous.

You're not talking about rock, you're talking about regolith.

Depending on where the regolith is sourced

Regolith is not "sourced", it's blown across the whole planet. It's not simply "whatever the underlying strata is made out of".

But, since we are playing 'name the ignorance' in this exchange, your attestation stat perchlorate is 0.5% liberatable oxygen says 'Say i'm ignorant of basic chemistry without saying i'm ignorant of basic chemistry, and am bad at reading too.' The 0.5% statistic comes from the publication at bottom, and is the proportion of the regolith that is perchlorates.

I am the one who mentioned that regolith is 0.5% perchlorates, not that "perchlorates are 0.5% oxygen". *facepalm*

"Saying we'll get oxygen from the 0,5-1% of a poison in martian regolith, rather than bulk ice or CO2, is..."

For God's sake, learn to fucking read.

Washing the regolith to remove the perchlorate is a requirement for *any* other use of that regolith

Which is why you shouldn't be celebrating its existence. It is a problematic contaminant, not a resource.

As you have rightly pointed out, the water ice on mars is more 'frozen mud'. Cleaning the melt is going to be a necessary first step to using it *regardless*. That means either vacuum distillation, thermal distillation, or reverse osmosis filtration. Again, NOT OPTIONAL. This is necessary equipment that you need to bring, regardless.

And this just to get water, the most basic of offworld resources. And all of that equipment (especially the mining hardware itself) requires maintenance and spare parts, which impose more dependencies. And the TRL for use on Mars is low regardless.

You've gone from talking up the ease of operating on Mars to talking it down, yet your self-righteousness hasn't shifted at all in the process.

RO filtration is the least energy intensive of these.

Except, it isn't. 0,5-1% perchlorates. RO typically removes 90-95% of perchlorates. So you're down to ~500ppm. Human safety levels** are in the low parts per billion. You're five orders of magnitude off. Yes, you can purify water that far - and the more perchlorates, the easier - but you're talking an over millionfold reduction. It is not at all trivial. You're talking first RO to get it down to levels where it won't hinder bacterial growth, then bioreactor bacterial remediation, then filtration, then RO, then ion exchange. This is not some little, simple system.

** Plants can tolerate much more perchlorates than humans, but they also bioaccumulate perchlorates of exposed to them, so you have to reduce the water to low ppb levels.

The end products are clean water and perchlorate contaminated mud, and clean mud, with contaminated water.

Viola! *eyeroll*

And your "plan" for dealing with waste perchlorate doesn't just magically produce pure O2 and NaCl in the real world. First off, molten sodium perchlorate, which is what it becomes before it decomposes, is an extremely corrosive oxidizer. Exactly what are you planning to make the furnace out of, platinum? Secondly, you never get perfect decomposition. Apart from residual perchlorates, you have residual sodium chlorate, which is also corrosive, and is a literal herbicide. And your gas stream will contain contaminant chloride and chlorine dioxide, which, news flash, you don't want to breathe.

There is no way on Earth anyone would ever prefer this to just conducting electrolysis on the water that you've already purified.

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