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fchollet's profile
François Chollet
François Chollet
François Chollet
Verified account
@fchollet

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François CholletVerified account

@fchollet

Deep learning @google. Creator of Keras. Author of 'Deep Learning with Python'. Opinions are my own.

United States
fchollet.com
Joined August 2009

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    1. François Chollet‏Verified account @fchollet 2 Dec 2017

      Sophistic musing: if civilizations could expand at exponential rates, rather than sigmoidally (locally) or linearly (long-term), we would have been in touch with aliens by now

      19 replies 20 retweets 89 likes
      Show this thread
    2. François Chollet‏Verified account @fchollet 2 Dec 2017

      If you assume energy consumption at current human levels, and a growth rate of ~3% per year (current), it would take ~2,500 years for us to consume all of the stars in the galaxy

      4 replies 21 retweets 44 likes
      Show this thread
    3. François Chollet‏Verified account @fchollet 2 Dec 2017

      So a single civilization going exponential anywhere in the galaxy at least 2,500 years ago would have consumed our sun by now

      5 replies 2 retweets 20 likes
      Show this thread
      François Chollet‏Verified account @fchollet 2 Dec 2017

      Even taking into account the speed of light as a hard limit on expansion, it would still only take on the order of 100k years -- less than the age of humanity

      11:31 AM - 2 Dec 2017
      • 14 Likes
      • Evgeni Arent sacha yves saint-leger🎗 Jediphone Ana Laura Diedrichs Dev Benedict Slaney Anna Gát 🧭 · ✈️ NYC, SF, DC 👋
      4 replies 0 retweets 14 likes
        1. New conversation
        2. Flo Crivello‏ @Altimor 2 Dec 2017
          Replying to @fchollet

          One civilization has got to be the first though

          1 reply 0 retweets 1 like
        3. Stan Bileschi‏ @xtan 2 Dec 2017
          Replying to @Altimor @fchollet

          Shotgun!

          0 replies 0 retweets 0 likes
        4. End of conversation
        1. AlexTavgen‏ @ATavgen 2 Dec 2017
          Replying to @fchollet

          Maybe we are the first ones? Cause we need to have elements which synthesized in supernovas. So...

          0 replies 0 retweets 0 likes
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        1. New conversation
        2. MC Arkuat‏ @arkuatb 13 Dec 2017
          Replying to @fchollet

          Interesting train of thought, but my dude, have you considered that the Big Bang produced only H & He, that all carbon etc was made in the hearts of stars and had to be thrown forth therefrom into the interstellar medium...

          1 reply 0 retweets 0 likes
        3. MC Arkuat‏ @arkuatb 13 Dec 2017
          Replying to @arkuatb @fchollet

          And that the universe was about 8 gigayears old when our Solar planetesy condensed from that interstellar medium, and maybe it took at least that long to make enough astrophysical metals, that we need to take this into account in the Drake equation...

          1 reply 0 retweets 0 likes
        4. Show replies

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