kragen

294 ms·

1. 2641.▲
   by kragen 1y ago

   That is not correct.
2. 2642.▲
   by kragen 1y ago

   They say a boat is a hole in the water into which you pour
3. 2643.▲
   by kragen 1y ago

   What's Christian about Unix time? I don't recall ever reading that either Thompson or Ritchie was theist at all, much less Christian. And the division of the solar day into 24 hours of 60 minutes of 60 seconds is not Christian bu
4. 2644.▲
   by kragen 1y ago

   Be careful to note that I didn't say the majority of people would be living in space colonies, but that the majority of inhabited land area would be found in them. Probably you're right that most people will choose to die on t
5. 2645.▲
   by kragen 1y ago

   The thing people should rightly dismiss is the idea that human engineering is a minor enough consideration in predictions of the far future that it can be ignored as a sort of rounding error. The humans have already destroyed much of Earth
6. 2646.▲
   by kragen 1y ago

   Are Dirac deltas hyperreal? Asking for a friend.
7. 2647.▲
   by kragen 1y ago

   We already have the technology to move a planet; it's just orbiting rockets. (Ion thrusters are especially promising here because of the small amount of mass you lose from the planet in the process.) We just don't have the neces
8. 2648.▲
   by kragen 1y ago

   Right, to distinguish fanfic, incorrect conspiracy theories, myth, and AI-generated hallucinations from what really happened.
9. 2649.▲
   by kragen 1y ago

   I don't know, but Jupiter has that kinetic energy now, and if you slow it down until it falls into the Sun, it won't have it anymore. The energy has to go somewhere. Maybe you scoop up big balloons of gas, slingshot them to Mercu
10. 2650.▲
    by kragen 1y ago

    I thought you fixed a sailboat for a living :)
11. 2651.▲
    by kragen 1y ago

    We're talking about a much longer period of time than 1000 years. Like, 4.5 billion years. Or at least 500 million. People who speak Indo-European languages such as English, Hindi, and Portuguese descend from migrants from the Casp
12. 2652.▲
    by kragen 1y ago

    The article claims that Earth will be incinerated, but we could just move Earth further from the Sun. The energy of escape velocity is just GMm / r . r is one AU, 150 gigameters. G is the gravitational constant, 67 piconewton s
13. 2653.▲
    by kragen 1y ago

    How well do par2 files handle insertion errors? 100 errors in an 876kB file would be about an 0.0012% errror rate. You are going to need another level of ECC before that.
14. 2654.▲
    by kragen 1y ago

    This is a brilliant idea, not because it is practical but because it is not.
15. 2655.▲
    by kragen 1y ago

    If a pixel can be printed with no colors (white), cyan, magenta, yellow, cyan and magenta (blue), magenta and yellow (red), yellow and cyan (green), or all three inks (black), that's 8 colors, 3 bits per pixel, not just 3 colors. Typi
16. 2656.▲
    by kragen 1y ago

    Acid-free paper has a lot to recommend it: an archival lifespan of about 1000 years, low cost, and widespread equipment for printing it en masse very cheaply. Other media are superior in one or another way, but all are far more expensive
17. 2657.▲
    by kragen 1y ago

    That's a good point. It's more like an 8051 than a 4004, and the 8051 was 50k transistors.
18. 2658.▲
    by kragen 1y ago

    You may be interested in #forth on Libera, though it's unlikely to lead to work.
19. 2659.▲
    by kragen 1y ago

    Pas de problème, merci beaucoup!
20. 2660.▲
    by kragen 1y ago

    High-energy physics?
21. 2661.▲
    by kragen 1y ago

    Can you elaborate? What kinds of things are you doing, maybe something related to programming? What part of the job do you delegate?
22. 2662.▲
    by kragen 1y ago

    > For the young players: this is what hacker in “Hacker News” stands for. No, it is not, though there is a connection. As it happens, the founder of Hacker News wrote a very inspiring essay shortly before setting up the site on what t
23. 2663.▲
    by kragen 1y ago

    This is pretty cool. There were some LFSR-PC CPUs back in the 70s such as the TMS 1000 used in the Speak&Spell https://github.com/mikeakohn/tms1000_fpga (its Data Manual omits mention of this, but the Programmer&
24. 2664.▲
    by kragen 1y ago

    Sure, I can accept that. Does modal interval analysis help with these cases? I still don't understand it, but there are a lot of things I don't understand in numerical methods.
25. 2665.▲
    by kragen 1y ago

    Functions with a derivative can definitely have the Lipschitz property. The “examples” section of https://en.m.wikipedia.org/wiki/Lipschitz_continuity begins with a subsection entitled, “Lipschitz continuous functions
26. 2666.▲
    by kragen 1y ago

    Max, min, and the L1 norm? Those have derivatives (gradients) almost everywhere . The derivatives are undefined at a set of points of measure zero, and the functions are continuous across those gaps.
27. 2667.▲
    by kragen 1y ago

    Dunno, I got one of my misconceptions about Archimedes corrected: https://news.ycombinator.com/item?id=44134348
28. 2668.▲
    by kragen 1y ago

    You seem to have sedulously avoided answering my question.
29. 2669.▲
    by kragen 1y ago

    From my point of view, the problem with numerical instability is that your program computes the wrong answer, and, worse, gives you no clue that it's wrong. Interval and other self-validating methods do fix that problem: the answer ma
30. 2670.▲
    by kragen 1y ago

    I think there are probably different populations commenting here with different backgrounds, and consequently different assumptions and different blind spots. For example, for Newton's Method, it does very much matter whether the fun