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paulg's profile
Paul Graham
Paul Graham
Paul Graham
Verified account
@paulg

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Paul GrahamVerified account

@paulg

paulgraham.com
Joined August 2010

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    1. Robin Hanson‏Verified account @robinhanson 11 Jan 2020

      "many aspects of physics … do not look like the product of an efficient world-simulator. For example … space & time are smooth & continuous. … lot of hidden complexity … poor strategy to build a simulated world out of such hard-to-compute ingredients."https://www.wsj.com/articles/are-we-living-in-a-simulated-world-11578581268 …

      5 replies 4 retweets 44 likes
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    2. Robin Hanson‏Verified account @robinhanson 11 Jan 2020

      Wow, yet another physicists who just can't get their head around the basic concept of living in a sim. Sim overlords wouldn't pick sim world physics to make it easy to compute; instead they'd mimic harder-to-compute physics so that residents don't notice much compute is missing.

      13 replies 0 retweets 40 likes
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      Paul Graham‏Verified account @paulg 11 Jan 2020
      Replying to @robinhanson

      Plus is hard-to-compute even a thing for the presumably ultrasophisticated sim creators?

      8:19 AM - 11 Jan 2020
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      3 replies 1 retweet 10 likes
        1. Joe‏ @c64f7e94 11 Jan 2020
          Replying to @paulg @robinhanson

          Of course. You're confusing ultrasophisticated sim creators with gods.

          0 replies 0 retweets 0 likes
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        2. Robin Hanson‏Verified account @robinhanson 11 Jan 2020
          Replying to @paulg

          Probably. Assuming laws of physics are really a thing, even very advanced creatures remained limited by them.

          1 reply 0 retweets 5 likes
        3. David Whittington‏ @djwhitt 11 Jan 2020
          Replying to @robinhanson @paulg

          Is there a good reason to think the laws of physics would be the same outside the simulation?

          1 reply 0 retweets 3 likes
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        2. Rob Miles‏ @robertskmiles 11 Jan 2020
          Replying to @paulg @robinhanson

          And I wonder how much of our sense of "hard to compute" is based on the computers that are possible in our universe. Possibly the simulators have dramatically different physics, like us simulating Conway's Game of Life

          1 reply 0 retweets 6 likes
        3. Nnotm‏ @nnotm 11 Jan 2020
          Replying to @robertskmiles @paulg @robinhanson

          Doesn't the way we classify algorithms based on asymptotic complexity still apply to computers we can construct in Game of Life?

          1 reply 0 retweets 0 likes
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