jacobolus

118 ms·

1. 1141.▲
   by jacobolus 5y ago

   The charts in this paper are hilarious: https://pjreddie.com/media/files/papers/YOLOv3.pdf Previous authors didn’t start their axes at 0, so he kept their axes and just put the timing for YOLO outside the ori
2. 1142.▲
   by jacobolus 5y ago

   If you think landscapers have no choice but to use machinery that is literally poisoning them – because they can’t otherwise compete with all the other landcapers who are willing to poison themselves – then a government ban on these toxic
3. 1143.▲
   by jacobolus 5y ago

   One thing you might point out to your father is that his choice of dirty obsolete technology is exposing himself and his workers to dangerous levels of carcinogenic crap all day long, taking years off their lives. Not to mention the hearing
4. 1144.▲
   by jacobolus 5y ago

   Origin: https://xkcd.com/356/
5. 1145.▲
   by jacobolus 5y ago

   > takes some commitment to the environment vs profit What it takes is government regulation.
6. 1146.▲
   by jacobolus 5y ago

   This is emissions of miscellaneous hydrocarbons, NO, NO₂, and CO. Not CO₂. If you add a catalytic converter etc. you could cut most of it. But then the engine would be much bulkier and more expensive.
7. 1147.▲
   by jacobolus 5y ago

   I hope you spell it Æþelbriht like https://en.wikipedia.org/wiki/File:Entry_for_827_in_the_Angl...
8. 1148.▲
   by jacobolus 5y ago

   British English "revise" = American English "study".
9. 1149.▲
   by jacobolus 5y ago

   According to Wikipedia the biggest groups are Syrians, Iraqis, and people from the former Yugoslavia. There are also a lot of Finns. Then there are Poles, Iranians, Somalis, Afghans, Turks, Germans, Eritreans, Thais, Indians, Norwegians, Da
10. 1150.▲
    by jacobolus 5y ago

    (Sweden is comparable in proportion of foreign immigrants to New York, Florida, or Hawaii; a bit lower than California; much more than most US states. As far as diversity is concerned, Japan/Taiwan are more like West Virginia.)
11. 1151.▲
    by jacobolus 5y ago

    If you want to set your kid to succeed at spelling tests per se (and he doesn’t have enough past reading/writing experience to know the words already), you could get a list of likely words a few months in advance and put them into some
12. 1152.▲
    by jacobolus 5y ago

    My oldest kid is 5, but I hope when he is older I can leave him to handle his own schoolwork (offering help if he wants it). > study for their weekly spelling tests for 10 minutes a day Aside: Spending 1.5+ hours per week between home
13. 1153.▲
    by jacobolus 5y ago

    Sweden is something like 20% foreign immigrants and another 5% who are children of 2 immigrant parents. For the past half century Sweden has taken in a lot of refugees and other immigrants, and has more foreign residents per capita than the
14. 1154.▲
    by jacobolus 5y ago

    Active involvement = parent teaches child various skills and ideas, reads books aloud, suggests interesting problems to solve, works together with them on extra-curricular projects, obtains materials and resources related to the child’s per
15. 1155.▲
    by jacobolus 5y ago

    I’m glad to hear that. I never interacted with the intro calculus course there. My impression is that most intro calculus courses around the US today still use some book like Stewart, Larson, or Thomas, and still teach in traditional lectur
16. 1156.▲
    by jacobolus 5y ago

    I have read (part of) it, and it is excellent. I highly recommend it (alongside Needham’s VCA book). But the lessons learned from there are largely orthogonal to the lessons you will learn from working with GA for a while. To the grandparen
17. 1157.▲
    by jacobolus 5y ago

    The nicest written-up example I know is https://www.shapeoperator.com/2016/12/12/sunset-geometry/ * * * As a relatively recent personal example I spent a few months (in bits and pieces) working out a bun
18. 1158.▲
    by jacobolus 5y ago

    There has been continuous research into alternative pedagogy, but the typical undergraduate intro math/science course looks pretty much unchanged in both pedagogy and curriculum. My undergraduate math and physics courses circa 2005 wer
19. 1159.▲
    by jacobolus 5y ago

    Have you ever spent a few months trying to solve a wide variety problems using GA as a formalism, or tried teaching it to e.g. undergraduates? If not, you are speculating beyond your experience.
20. 1160.▲
    by jacobolus 5y ago

    > Suppose I want to teach first-semester mechanics If you need to teach undergraduate mechanics, I highly recommend you at least read some of Hestenes’ New Foundations for Classical Mechanics http://geocalc.clas.asu.edu&#x
21. 1161.▲
    by jacobolus 5y ago

    > for someone studying vector calculus properly If you can’t invert vectors, you aren’t studying vector calculus properly. ;-) Differential forms are a half-baked formalism. Unfortunately I don’t know of any great undergraduate level g
22. 1162.▲
    by jacobolus 5y ago

    > People know about it and have decided not to teach it Generally teachers don’t (can’t) individually decide this. Decisions about what to teach have incredible historical inertia, and are largely decided based on what the teacher lear
23. 1163.▲
    by jacobolus 5y ago

    The author went to MIT, worked for NASA, and now lives in San Francisco https://twitter.com/mferraro89 It is unexceptional (indeed, expected) to get through an American undergraduate science or engineering degree without ev
24. 1164.▲
    by jacobolus 5y ago

    Traditional boat builders obviously did not employ piecewise-rational parametric curves with off-curve control points. But they did use physical splines to draw smooth curves long before car/airplane designers.
25. 1165.▲
    by jacobolus 5y ago

    The use of such splines comes earlier from boat building. The process looks like: https://www.youtube.com/watch?v=oKJagvumvCI
26. 1166.▲
    by jacobolus 5y ago

    > A != A if A is a NaN Among other things, this is super useful insofar as it gives a reliable way to test for NaN.
27. 1167.▲
    by jacobolus 5y ago

    > why funnel the money into existing cities? Among other reasons, we should because the existing cities are the most resource-efficient and lowest-environmental-impact living places we have at scale, and typically subsidize the infrastru
28. 1168.▲
    by jacobolus 5y ago

    SF board of supervisors just voted unanimously against turning an old barely used church into 300 small shared-kitchen studio apartments, because it’s not “family friendly” enough. https://www.sfchronicle.com/bayarea/ar
29. 1169.▲
    by jacobolus 5y ago

    > It's not like they read all the books either The point of having a library (personal or otherwise) is not to read every one of the books cover to cover. Knowing where to find a particular book and how to look up what you need insi
30. 1170.▲
    by jacobolus 5y ago

    This is pure speculation, ungrounded from any evidence. The touch bar is a very flexible (effectively) analog input + rich display device. If adequately supported by software it can be an amazing input, affording a range of useful functions