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Comment Re:I don't get it (Score 1) 68

Not all of the UPSes need to be doing their test at the same time, just some of them. Mine, for example, tests every large handful of days (somethig like every two weeks). It's sufficient that a fraction will be doing their testing synchronized to a reasonably accurate clock and thus will be creating a load that is in lock-step, and have a detectable result.

Comment Re:What will NVIDIA do next... (Score 1) 131

Running away to AI is hardly a cowardly move, it's the most unbelievable good fortune imaginable. And total luck for Nvidia, although they made that luck to some extent.

If there was one thing clear, Huang didn't know jack shit about AI, he was a fraud. I assume he had competence in graphics.

Comment Lessons from the physical world - 1831 bridge fail (Score 4, Informative) 68

This is eerily similar to the marching soldiers' bridge collapse - Broughton Bridge in 1831, often misattributed to Napoleon but happened after his reign.

Lessons weren't learned 180 years later either, for the Milllennium Suspension Bridge, which I happened to work next to at the time and watched the construction and failure unfold. People tend to walk in sync. When things happen in sync, a resonant pattern emerges. It's true for people crossing bridges. It's true for people synchronising machines to exact clocks and nice rounded-off times as well.

Comment Coherence (Score 5, Interesting) 68

When I was working for a startup in the early 2000s, we had our own servers. We were growing, so were adding servers at a pretty good clip. After one particular expansion, all of a sudden, Saturday night at 3 am, we blew breaker. No one had a good explanation, but the sysadmins were not happy about needing to go to the office in the middle of the night to fix things up.

A week later, the same thing happened. I suggested that it was the RAID check kickoff that might be doing it. And, indeed, it was. A couple of dozen servers all seeking their drives at once was too much for the circuits they were on. Staggering the startup time fixed it.

Coherence can be good, like when you're rowing crew, or bad, like when you have dozens of drives all drawing max power. Or, from the summary, gazoober UPS systems doing a battery check.

Comment Re:Bejesus - Beer and Circuses (Score 2) 52

If society is so fucked, you fantasise about dropping out and breaking it

uh, it's a fucking videogame bro. it's fun to play because it's fun to do things you generally are not allowed or able to experience in real life - even if it's a very distance simulation of it - be it steal sports cars and drive them off the top of an office building, or jump down a warp pipe and stomp on some squids' heads

it's one of the same principal reasons people watch movies or tv - it's different than your normal routine and produces emotional responses, which is a thing humans seek out

Comment Re: Not terrible, which is too bad (Score 3, Interesting) 73

Map of agricultural production changes in the nuclear winter following a minor nuclear exchange, posted for no particular reason.

(For a full-scale exchange...)

Also, for no particular reason, a map of Russia's population distribution, alongside a reminder of Russia's nuclear missile failure rate, particularly booster failures. And that nuclear warheads have been commonly lost disturbingly often even during peacetime, with at least seven weapons from four incidents lost in flight landing in a way that left them fully intact and easily reparable, just from the US alone. And that Ukraine is rich in nuclear engineers, including still some retirees who worked in the Soviet nuclear weapons programme.

There's also this myth that "if you just use a nuclear weapon, you automatically win the war". Nuclear weapons are immensely effective terror weapons, but their effectiveness on the front is a lot weaker than most people think. People on frontlines tend to be in trenches, bunkers, basements, armoured vehicles, etc, and can be surprisingly close to a tactical nuclear blast while still surviving. They're effective against hard points but struggle against a broad, diffuse front (aka, today's front, which is a sparsely populated, deep, amorphous zone, thanks to drones). Amortizing Russia's estimated budget for tactical nuclear weapons comes up with ~$15-25M per weapon (not counting the delivery system), so they're hardly a dime a dozen either.

IF, via terror bombing or threats of terror bombing, you can convince your enemy to surrender, then congratulations, you have won (enjoy your nuclear waste heap and restive population who wants nothing more than to kill you). If they do not, however, their only goal remaining will be to focus 100% on using their extensive nuclear waste supplies rich in plutonium, their extensive long-range strike weapon supplies, and their extensive metallurgical experience, to render your major cities to ash in the same way that you did theirs.

(I also just assume herein that Ukraine doesn't actually have a secret nuclear weapons programme already, which is certainly an assumption).

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