James Wu

@analogist_net

Engineer, neuroscientist, pessimist. I care about infrastructure. Making tech work with us, with our bodies, and with our societies before we die.

Seattle, WA, USA
যোগদান করেছেন মে ২০১৪

মিডিয়া

  1. ৪ জুলাই

    A classic example of "tactile acuity" is 2-point discrimination, whether you can tell that 2 pinpricks are, in fact, from 2 different pins. Well, you might know that this is about a millimeter of acuity in your fingertip, and many centimeters on your torso. That's not bullshit.

    2-point discrimination: ranges from very fine on fingertip, to very course on torso and calf.
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  2. ৪ জুলাই

    It shouldn't be surprising to you know that this illusion starts fading if the two touches become separated by more than 200-300ms.

    Rubber hand illusion feedback delay: 200ms and the sensation disappears.
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  3. ৪ জুলাই

    If your hand is hidden well enough, and the rubber hand is placed in a plausible position, and the two touches are at around the same time, many people start to feel like the rubber hand is part of their own body.

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  4. ৪ জুলাই

    In a famous experiment in 1999, Dan Wolpert's lab built a robot. You moved the robot's arm, and another arm mirrored your movements, after an adjustable short delay. You could now in fact tickle yourself - as long as the robot copying your movements was delayed by about 200 ms.

    Tickling sensations using a robot that copied your movements is about the same as if someone else tickled you, after a 200ms delay.
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  5. ২৫ জুন
    -কে উত্তর দিচ্ছেন

    White moderates in 1961 certainly didn’t have a very positive view of MLK... or demonstrations... or sit ins... I wonder how many 1960s op-eds about “civility” one can find in the newspaper archives.

  6. ২৪ মে
    -কে উত্তর দিচ্ছেন

    Wow, bradycardia and syncope is... 2% of IUD insertion cases in this (single-region) ‘97-‘00 NHS case survey!

  7. ১১ মে
  8. ১ এপ্রিল
    উত্তর দিচ্ছেনReplying to এবং অন্য

    I'm a neuro grad student, not a dev, but Cryptopals is one of the best-designed educational exercises I have ever tried. Here's another $120 towards more Cryptopals. $640 in the Slate this quarter, $1140 total. I can afford it on $35k/yr, can you do better?

  9. ২৮ মার্চ
    -কে উত্তর দিচ্ছেন

    That is a lot of gotchas and caveats compared to 's straightforward advice. The bottom line is that 42% of all Android users are running an OS 3 years out of date, while < 4% of all iOS users are running an OS even 1 year out of date. These are real-life results TODAY.

  10. ২০ মার্চ
    -কে উত্তর দিচ্ছেন

    This also explains a lot of that thread.

  11. ২০ মার্চ

    Policy cannot be voluntary, and must focus on economic impact and how to resume life and society after the disaster.

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  12. ২০ মার্চ

    “That’s how we moved the discussion about the fear of *whether* it’s going to happen, to *when* you’re going to plan for it.”

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  13. ২০ মার্চ

    “Instead we tell stories.” People make decisions about stories. “When I’m asked about the probabilities, I tell them 100%, just give me enough time.”

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  14. ২০ মার্চ

    “We think about scaring people into decisions. That’s not how people make decisions. When fear raises, people come up with justifications of how it will not happen.”

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  15. ২০ মার্চ

    “We [scientists] are trained to communicate the all the uncertainties and background and methodological flaws first. When people finish listening to that, the first thing they come away with is that you aren’t sure and don’t know what you’re talking about.”

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  16. ১৯ মার্চ

    Japanese designed seismic resistant pipes with ductile iron and flexible joints. Due to this endeavor, prices are coming down from competition.

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  17. ১৯ মার্চ

    The only system that received pushback and was not implemented was a building rating system to incentivize going beyond minimal code.

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  18. ১৯ মার্চ

    $1b of 20,000 building retrofit and renovations.

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  19. ১৯ মার্চ

    “At the end, everything is about the people. It’s not about dying in the earthquake, it’s about having a functioning society that people are willing to stay.”

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  20. ১৯ মার্চ

    “As a city, we are a system and we function as a group. We defined urban disaster resilience ... we defined pieces of critical infrastructure that we put everything else on that we call modern life.”

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