Jason Crawford

@jasoncrawford

I write about the history of technology & industry at . Previously: co-founder & CEO, ; engineering manager at Flexport and Amazon

Vrijeme pridruživanja: travanj 2007.

Medijski sadržaj

  1. prije 4 sata

    Twitter appears to have discovered that conversations branch and that a tweet can have more than one reply. Or maybe I'm in the treatment of an A/B test?

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  2. prije 6 sati

    Also (The references are getting a bit dated but it's still a classic)

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  3. 2. velj

    Why do so many books describe statistics in words instead of giving you a damn chart? I could understand this much better and faster with a simple line chart. 📈

  4. 2. velj

    Fifteen miles an hour! The reckless daredevils cc ⁦

  5. 2. velj
    Odgovor korisnicima
  6. 1. velj
    Odgovor korisniku/ci
  7. 1. velj
    Odgovor korisniku/ci

    “Do your research”, she says, after linking to my research! Vaccines eradicated smallpox, eliminated polio, and have reduced morbidity for many other diseases by over 99%

  8. 30. sij
    Odgovor korisniku/ci

    Obligatory Spaceballs reference

  9. 29. sij
    Odgovor korisniku/ci

    Read the abstract. This paper seems to be about one disease, diarrhea. Waterborne diseases such as cholera and typhoid fever were more strongly affected:

  10. 29. sij

    OMG they did it. It's real

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  11. 28. sij

    But just because medical treatments didn't rack up the most points on this scoreboard, doesn't mean we can't credit medical technology for these improvements, if we construe “medicine” broadly enough to include public health efforts. Or since this is Twitter, in meme form:

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  12. 28. sij

    They're fantastically effective, though, having reduced morbidity for several important diseases by over 99% ():

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  13. 28. sij

    So what about antibiotics? By the time they were invented, mortality rates from infection had already been reduced by a large factor. In the US from 1900–37 they were dropping 2.8%/year. But during the golden age of antibiotics in 1937–52, they fell *8.2%/year*:

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  14. 28. sij

    Food handling was improved, too. In the 1800s, milk was transported warm in open containers, making it a literal breeding ground for bacteria. Pasteurization (introduced around 1900) and sealed tins and bottles improved health, contributing to this decline in infant mortality:

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  15. 28. sij

    Around the turn of the 20th century, water filtration was upgraded to be more effective against bacteria, and chlorine was added to kill germs that weren't filtered out. Here's how that affected typhoid fever in Pittsburgh:

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  16. 28. sij

    In fact, probably *much* longer. Here's data showing overall mortality rates dropping in various European countries since the mid-1700s, and I've read that there is evidence of a decline starting in the 1670s.

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  17. 28. sij

    Vaccines and antibiotics get the spotlight in most histories. But they weren't in widespread use before about the late 1930s. And it turns out that infectious disease mortality rates were dropping since long before this. (First chart: US, second: England & Wales)

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  18. 27. sij

    Anti-vax fears used to be even more ridiculous in the 1700s: cc ⁦

  19. 27. sij

    Complaints about education in the 1800s ring familiar today: “that terrible treadmill of forcing an avalanche of figures and facts into young brains not qualified to assimilate them as yet.” cc ⁦⁩ ⁦⁩ ⁦⁩ ⁦

  20. 25. sij
    Odgovor korisniku/ci

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