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pjscott

HN member
Joined
Sun, May 23, 2010, 1:27 AM UTC
HN karma
9,788
Public activity
2,884 items

About pjscott

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Recent public activity

  1. comment
    Comment #49092297

    There are school shootings and they’re certainly awful. Similarly, people sometimes get struck by lightning, and this is awful too. But if your goal is to prevent deaths, rather th…

  2. comment
    Comment #48952865

    They're going for an orbital height of 600–800 km, or about 2-3 light-milliseconds from Earth's surface. A lot of people think of satellites as being necessarily high-latency becau…

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    Comment #48428605

    From Google's spokesperson, quoted in the article: "This is a short-term, timely agreement to ensure we have bridge capacity to meet surging customer demand for our agent platform,…

  6. comment
    Comment #48428502

    Musk made big investments in building AI data centers starting in 2024, continuing through the present. SpaceX got those assets from xAI, spun off from X, via an acquisition. More …

  7. comment
    Comment #48403445

    Even then, the numbers don't even remotely work out. Consider this "Elon Bezos" person; the combined net worth of Elon Musk and Jeff Bezos is about $1.3 trillion or so, and the "To…

  8. comment
    Comment #48245269

    You're right, of course, but "those in government" aren't a single entity. There's always an incentive for one corrupt part of government to take more than their fair share of the …

  9. comment
    Comment #47883969

    It doesn't track cost of living? The way it's calculated is all about cost of living! In the US, the official inflation numbers are based on a "basket of goods" meant to be represe…

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    Comment #47736773

    The wording was a bit unclear. The previous paragraph mentions wanting something cheaper than "those pesky XORs and multiplications". The multiplication is the expensive part; the …

  11. comment
    Comment #47549284

    > I’d like to know the memory profile of this. The bottleneck is obviously sort which buffers everything in memory. That's not obvious to me. I checked the manuals for sort(1) in G…

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    Comment #47549095

    If money ever starts looking particularly illusory, try thinking in terms of the underlying resources that markets allocate. That's 'resources' viewed as expansively as possible, e…

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    Comment #46821750

    So it looks to be just the latency improvement that's noteworthy, then. Thank you!

  14. comment
    Comment #46821559

    If you're familiar with the technical specs, I'd be interested in hearing what size of objects the star trackers can sense and at what range. In theory the fancier star trackers ca…

  15. comment
    Comment #46820992

    Honestly, these two paragraphs are one of the most compelling things they could possibly say in a press release: > Stargaze already has a proven track record in its utility for spa…

  16. comment
    Comment #46816437

    Slowing the adoption of much-safer-than-humans robotaxis, for whatever reason, has a price measured in lives. If you think that the principle you've just stated is worth all those …

  17. comment
    Comment #46427666

    It's a tale as old as schlock journalism: an article seems interesting... until it talks about something you actually know about personally, at which point it suddenly starts sayin…

  18. comment
    Comment #46330098

    I'm not too familiar with the JVM so perhaps I'm missing something here: how would that help? The file is tiny, just a few bytes, so I'd expect the main slowdown to come from syste…

  19. comment
    Comment #46329980

    As with all the ahead-of-time compiled languages that I checked, the answer is that it generates non-SIMD code for the hot loop. The assembly code I see in godbolt.org isn't bad at…

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    Comment #46329857

    The common element is that they're written with the most obvious version of the code, while the ones in the faster bucket are either explicitly vectorized or written in non-obvious…

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    Comment #46329621

    The delta there is because the Rust 1.92 version uses the straightforward iterative code and the 1.94-nightly version explicitly uses std::simd vectorization. Compare the source co…

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    Comment #46239143

    They have very limited power these days. They advise the House of Commons, as more or less a hereditary think tank. They can delay the passage of bills, though this has been limite…

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    Comment #45576109

    They do, technically, allow JIT. You need a very hard-to-obtain entitlement that lets you turn writable pages into executable read-only pages, and good luck getting that entitlemen…

  24. comment
    Comment #45368121

    It may comfort you to hear that the Starlink satellites are tiny in comparison to the vastness of their orbit – the visualization makes them appear larger than they are, so you can…

  25. comment
    Comment #44477423

    I’m also introverted, and I also found this article overwhelming – if I tried to do it all at once, which seems so laughably unrealistic for me that I just wouldn’t try. Instead, p…