graycat

109 ms·

1. 751.▲
   by graycat 5y ago

   The OP (a) showed some icons that I doubt are in Unicode and (b) mentioned some hundreds or thousands of icons. For people who don't know English, between an undefined icon and an English word they don't know, which is easier to
2. 752.▲
   by graycat 5y ago

   Oops, the HN audience really likes icons.
3. 753.▲
   by graycat 5y ago

   Memo: To: Mozilla Subject: The Popularity of Firefox Dear Mozilla: Just saw the headline, "Mozilla Foundation places two-page advocacy ad in The New York Times (2004)" Okay, I will respond with some feedback intended to be helpf
4. 754.▲
   by graycat 5y ago

   > Why Won’t Anyone Teach Her Math? Some people, a lot of people, will gladly "teach her math" and do a good job of it. E.g., I tried to, here: In the thread "Why won’t anyone teach me math?" at https://new
5. 755.▲
   by graycat 5y ago

   The proofs in standard Euclidean high school plane geometry are a perfectly good introduction to how to write proofs. A good next step is just a college course in abstract algebra -- sets, groups, rings, fields, prime numbers, the fundamen
6. 756.▲
   by graycat 5y ago

   Part II So, for the OP and their "Why won’t anyone teach me math?", if you wish, can learn linear algebra like I did and outlined above. Then can effortlessly blow away the other students and even intimidate the prof even in an a
7. 757.▲
   by graycat 5y ago

   Part I So, Princeton did a really bad job teaching a first course in linear algebra for non-STEM majors. I'll try to make some sense out of that and outline how a student might defend themselves. First, as a ugrad, I looked at college
8. 758.▲
   by graycat 5y ago

   At the US Senate Web site at URL https://www.congress.gov/bill/117th-congress/senate-bill/3538/cosponsors on S.3538 - EARN IT Act of 2022 I saw in part: Cosponsors: S.3538 — 117
9. 759.▲
   by graycat 5y ago

   > treating human height as a bunch of iids is the simplest approach. Sounds fine. If you treat heights as some i.i.d.s, then can use the central limit theorem to argue that in the limit for large samples (we get convergence in distributi
10. 760.▲
    by graycat 5y ago

    In the US, the birth rates are so low we are rapidly going extinct, literally. So, from that fact, it is fair to conclude that there are some serious problems with dating . In particular, there are a lot of weak, sick, dead limbs on the
11. 761.▲
    by graycat 5y ago

    At best, only approximately Gaussian. Height cannot be Gaussian if only because height is never negative but every Gaussian density is positive for all real numbers, including negative real numbers. "interactions of many genes that are
12. 762.▲
    by graycat 5y ago

    > In a large, Gaussian distributed population Where do we get one of those? The central limit theorem doesn't give us one of those. Not even the Lindeberg-Feller central limit theorem. Neither does the strong law of large numbers.
13. 763.▲
    by graycat 5y ago

    It appears that there are three camps of stochastic processes: (1) Old. Analyze bumps on railroad tracks, sound noise, the weather over time, ocean waves, .... So, the expectation is fixed, that is, does not vary. The sample paths are
14. 764.▲
    by graycat 5y ago

    > Knowing a triplet ain't employing Pythagorean theorem. 3^2 + 4^2 = 5^2 = 25 guarantees that the angle between the side length 3 and the side of length 4 is a right angle which is what the carpenter very much wanted to know. E.g.,
15. 765.▲
    by graycat 5y ago

    Uh, there is a carpenter with a Web site that uses the "3, 4, 5 rule", of course, the Pythagorean theorem. The first order ordinary differential equation initial value problem d/dt y(t) = k y(t) ( b - y(t) ) can be use to mod
16. 766.▲
    by graycat 5y ago

    Thanks!
17. 767.▲
    by graycat 5y ago

    Thanks! I've always intended to announce going live at Hacker News and still plan to. But this OP and thread raise issues so close to my project that here I took the opportunity to outline my work and to ask for reactions. These da
18. 768.▲
    by graycat 5y ago

    Why are the official IBM 360/370 publications Principles of Operation not sufficient to write emulators?
19. 769.▲
    by graycat 5y ago

    Thanks! Yup, you bring up some good points. In the usual senses, approaches of getting to know users , essentially I don't want to do that: (a) Users can regard uses of such data as a threat to, compromise with, and an invasion of p
20. 770.▲
    by graycat 5y ago

    Thanks for the lessons! I'm a total novice in the world of NFT (Google says that abbreviates "non-fungible token"). You are way ahead of me. I'm such a novice that I don't yet even know how to use the words! I don
21. 771.▲
    by graycat 5y ago

    Thanks! Yes, I saw StumbleUpon early on. I just intend and hope to do better pleasing the users. So, it's recommendation -- maybe the user has heard of the content but wants the quality of the curated results. Uh, now the Inte
22. 772.▲
    by graycat 5y ago

    I'm no fan of NFT (non-fungible tokens) crypto and do not now, never have, never intend to own any, but, and maybe part of Web3 , am guessing at some useful purpose -- a convenient, low overhead, way to move many small amounts of m
23. 773.▲
    by graycat 5y ago

    Good to hear -- my startup wants to be one more example. Irony: The opportunity, goal, purpose of my startup is to help people find such Web sites, especially little or focused ones, that they will like . Or the short description of my
24. 774.▲
    by graycat 5y ago

    I object, objected, to the phrasing, word choice "random key". Just where the author got that, I don't know. I doubt that that phrase is anywhere in any of the writings of any of the people I listed. With your rewriting, cla
25. 775.▲
    by graycat 5y ago

    "A random process is a function indexed by a random key." Not just wrong, wildly bad nonsense. Go get some data. Now you have the value of a random variable . We don't get clear on just what random means, and in random v
26. 776.▲
    by graycat 5y ago

    When? As above, a long time ago!
27. 777.▲
    by graycat 5y ago

    "still in touch"? Naw. That was a long time ago! The money: I lived with low rent, in a dorm that had the option of no meals in a university cafeteria. Since I was teaching, I paid no tuition and, as I remember, paid no fees.
28. 778.▲
    by graycat 5y ago

    Hint: The number should not end in any of 0, 2, 4, 6, or 8!
29. 779.▲
    by graycat 5y ago

    I was a math grad student at IU. The place had one heck of a good music school, say, comparable to the best in the world. An Isaac Stern protege, later a concert master, violin prof, conductor, etc., put his old Italian violin under my le
30. 780.▲
    by graycat 5y ago

    > Cleveland, which is very close to Lake Erie. It's on the shore of Lake Erie. If it were any closer to Lake Erie it would be underwater! Lake Erie is not so far from Columbus: When I was a prof at Ohio State, my wife and I would