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Meaningness's profile
David Chapman
David Chapman
David Chapman
@Meaningness

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David Chapman

@Meaningness

Better ways of thinking, feeling, and acting—around problems of meaning and meaninglessness; self and society; ethics, purpose, and value.

meaningness.com/about-my-sites
Joined September 2010

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    1. David Chapman‏ @Meaningness 29 May 2019
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      🎙 Decades of neuro research wasted because "we wanted to be REAL SCIENTISTS." @BrentWRoberts at 15:00 on @fourbeerspod NIMH funded only candidate-gene and fMRI studies, because SCIENCE, and both of those turned out to be science-free mirages.https://fourbeers.fireside.fm/22 

      2 replies 42 retweets 126 likes
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    2. David Chapman‏ @Meaningness 29 May 2019
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      @BrentWRoberts dutifully pursued the 5-HTTLPR mutation, which was supposed to cause depression. By 2010 he realized it doesn't and abandoned the project. Yet, after seemingly conclusive evidence, funding inertia means we're still wasting time & $$ on it.https://slatestarcodex.com/2019/05/07/5-httlpr-a-pointed-review/ …

      5 replies 3 retweets 24 likes
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    3. Gomijacogeo‏ @gomijacogeo 29 May 2019
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      Replying to @Meaningness @BrentWRoberts

      I don't want to get too Pollyanna-ish and claim the system self-corrected gracefully, but it does self-correct. Eventually self-referential piles of bs come tumbling down which is better than most human systems of codifying information.

      1 reply 0 retweets 0 likes
    4. Gomijacogeo‏ @gomijacogeo 29 May 2019
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      Replying to @gomijacogeo @Meaningness @BrentWRoberts

      Similarly, there was obviously more to be wrung out of backprop, but it had to spend 15 years in the wilderness for hw to becomes so overpoweringly good that examples would overcome the stigma from the 2nd wave neural net prophets of the late-80's.

      1 reply 0 retweets 0 likes
    5. Gomijacogeo‏ @gomijacogeo 29 May 2019
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      Replying to @gomijacogeo @Meaningness @BrentWRoberts

      We had a 16K CM-200 back in the day and, for our use case (ocean and atmospheric modeling), it was a pretty nifty machine, but that was mostly due to the Weitek FPUs. The base CM-2 was more of an expensive curiosity.

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      David Chapman‏ @Meaningness 29 May 2019
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      Replying to @gomijacogeo @BrentWRoberts

      Yup. The CM-200 was a GPU before GPUs were invented. Or, less charitably, a Cray with an alien parasite attached. Or, the spiritual successor to the PDP-12… a floorwax AND a dessert topping. I left long before its design, and can’t take any of the credit/blame!

      8:35 PM - 29 May 2019
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