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blackholesRhot

HN member
Joined
Tue, Jul 21, 2015, 3:25 PM UTC
HN karma
141
Public activity
27 items

About blackholesRhot

math + physics + start-ups

Recent public activity

  1. comment
    Comment #42715607

    This is only for Starship testing. The issue should go away very soon, after at most a few more Starship tests.

  2. comment
    Comment #42715604

    This is only for Starship testing and should go away as an issue after a few more Starship tests.

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  4. comment
    Comment #32702749

    RIP Peter

  5. comment
    Comment #31057160

    Two of the three co-authors, Dan and Sho, come from high energy physics backgrounds. Dan went from pure high energy to the intersection of HEP and quantum information. Boris comes …

  6. comment
    Comment #31033556

    FYI I'm a Spinlaunch invesetor. Just watched this video. His argument for why Spinlaunch won't work is basically: 1) in the video of their first test chamber (12m diameter) there's…

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    Comment #25534655

    I was lucky enough to participate in one of these "educational programs". When I was in 6th grade I was selected to learn HAM radio and ask a question to the astronauts aboard STS-…

  9. comment
    Comment #22372190

    "Yeah, got cut for brevity, but students definitely experience serious anxiety about even the five year horizon." Lambda School is <5 years old. Pretty disingenuous man.

  10. comment
    Comment #20908501

    Completely agree.

  11. comment
    Comment #20743065

    Couldn't agree more.

  12. comment
    Comment #19297342

    the authors are basically rediscovering Chen-Stein’s concept of Poisson approximation... which can be used to almost trivially approximate any birthday problem variant. For example…

  13. comment
    Comment #18893708

    These concepts make more sense after one has been exposed to quantum mechanics. One of the first things you do in an intro to quantum mechanics class is calculate the energy levels…

  14. comment
    Comment #18555453

    I respect Schneier but this is basically 10x-ing the word count on Terry Tao’s 2016 blog post: https://www.google.com/amp/s/terrytao.wordpress.com/2016/06/... Unacceptable to me th…

  15. comment
    Comment #16640663

    Google Cloud and Microsoft Azure tutorials default to insecure datastore configurations; AWS, Rackspace and SoftLayer are better

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  18. comment
    Comment #15941467

    One favorable interpretation is that he’s trying to say something similar to what Richard Muller said here https://www.quora.com/What-is-your-opinion-on-the-UC-Berkele... In the 60…

  19. comment
    Comment #15615067

    Also, this hedge became an extremely famous trade in the years to come, netting Mexico $8B in savings. https://www.ft.com/content/ccd87f9e-9bd9-11de-b214-00144feab... https://www.b…

  20. comment
    Comment #15615023

    I was working in the crude oil / nat gas options pit at the NYMEX during the summer of 2008 when these trades went down (where much of Mexico's hedge was traded but not necessarily…

  21. comment
    Comment #12602720

    There were a couple papers a year ago showing pretty convincingly that yes there is some entanglement between some of its qubits. But from what I've seen there's zero evidence that…

  22. comment
    Comment #12517762

    A few comments as someone who works on the periphery of this field: 1. I started my PhD doing quantum information. People in quantum information spend a lot of time thinking about …

  23. comment
    Comment #12335033

    And a journalists' views on string theory :-/ "Just because Witten is a genius does not mean he is infallible. He is wrong, I believe, that string theory will eventually be validat…

  24. comment
    Comment #12242761

    I find this argument inadequate. The conclusion may be true (that most venture funds lose money) but this article does a poor job of elucidating why this may be the case. There are…

  25. comment
    Comment #12153771

    This general area is called "concentration of measure" in case you want to Google around and find other examples. A simple but informative calculation is to compute the volume of a…