6 votes

Life is a braid in spacetime

13 comments

  1. [13]
    PapaNachos
    Link
    I made it about half way through that before giving up. I couldn't figure out what point the author was trying to make. It seemed to essentially be saying that 'time exists and stuff happens' with...

    I made it about half way through that before giving up. I couldn't figure out what point the author was trying to make. It seemed to essentially be saying that 'time exists and stuff happens' with a lot of flowery, obfuscating language. And I'm an engineer. I can't imagine how a layperson is supposed to make heads or tails of anything here.

    This seriously sets off my bullshit alarm, but I didn't dig deep enough to point to what and where exactly.

    2 votes
    1. [8]
      mir
      Link Parent
      Yeah, I'm in the same boat. I appreciate @sqew posting this, but passages like simply made me question the point that the author was trying to make.

      Yeah, I'm in the same boat. I appreciate @sqew posting this, but passages like

      The roughly 10^29 elementary particles (quarks and electrons) that your body is made of form a tube-like shape through spacetime, analogous to the spiral shape of the Moon’s orbit (“The Moon’s Orbit”) but more complicated. If you’re swimming laps in a pool, that part of your spacetime tube has a zig-zag shape, and if you’re using a playground swing, that part of your spacetime tube has a serpentine shape.

      simply made me question the point that the author was trying to make.

      4 votes
      1. [7]
        geosmin
        Link Parent
        It's neat. That's the point. In the same sense that 99% of a tree's mass actually comes from the air and not the ground.

        It's neat. That's the point. In the same sense that 99% of a tree's mass actually comes from the air and not the ground.

        4 votes
        1. [5]
          PapaNachos
          Link Parent
          I'm sorry, what? A tree's mass comes from the air, not the ground? What does that even mean?

          I'm sorry, what? A tree's mass comes from the air, not the ground? What does that even mean?

          1. [2]
            CALICO
            Link Parent
            Most plants, really. Photosynthesis takes carbon dioxide from the atmosphere, and combines that with water to fuel a plants growth. Other than trace minerals from the soil, by and large a plants...

            Most plants, really.
            Photosynthesis takes carbon dioxide from the atmosphere, and combines that with water to fuel a plants growth. Other than trace minerals from the soil, by and large a plants mass is derived from the air.

            This is also why forests are important in regards to mitigating climate change. Trees sequester carbon from the atmosphere, and mostly hold on to it.

            6 votes
            1. PapaNachos
              Link Parent
              Yeah, that's much clearer. I read the earlier comment the wrong way and got lost.

              Yeah, that's much clearer. I read the earlier comment the wrong way and got lost.

              1 vote
          2. [2]
            geosmin
            Link Parent
            Trees are mostly carbon by mass. They pull CO2 from the air, keep the carbon and release the oxygen. Trees are made of air. You either find that neat or you don't. Both are fine.

            Trees are mostly carbon by mass. They pull CO2 from the air, keep the carbon and release the oxygen.

            Trees are made of air. You either find that neat or you don't. Both are fine.

            1 vote
            1. PapaNachos
              Link Parent
              Ah, that makes way more sense. Thanks for clarifying. I wouldn't say that means they're 'made of air', but now I get what you're saying.

              Ah, that makes way more sense. Thanks for clarifying.

              I wouldn't say that means they're 'made of air', but now I get what you're saying.

        2. mir
          Link Parent
          I'm glad you enjoyed the article! Personally, I imagine that the ideas presented in it are better described in the author's book - it is simply impossible to talk about red blood cells, Einstein,...

          I'm glad you enjoyed the article! Personally, I imagine that the ideas presented in it are better described in the author's book - it is simply impossible to talk about red blood cells, Einstein, the Swedish word for an 'atom heap' and death disintegration all in a few paragraphs without sounding like you are simply throwing out random examples and anecdotes. The ideas themselves may be sound, but I guess what turned me off was the presentation - a rapid listing of seemingly unrelated phenomena which the reader is meant to piece together in an attempt to catch a glimpse of the author's point.

    2. geosmin
      Link Parent
      I think it's just a matter of quite literally giving some perspective on the objective nature of reality. I enjoyed it.

      I think it's just a matter of quite literally giving some perspective on the objective nature of reality.

      I enjoyed it.

      3 votes
    3. [3]
      Cirrus
      Link Parent
      To me, the author is expressing his wonder at the complexity of life and suggesting a different way of looking at our existence. The idea of emergence - how inanimate objects can come together and...

      To me, the author is expressing his wonder at the complexity of life and suggesting a different way of looking at our existence. The idea of emergence - how inanimate objects can come together and form sentient life - is fascinating. His visualization of life as a braid in space-time is interesting brain food. The article doesn't have a purpose, it's just musings from a physicist.

      3 votes
      1. [2]
        PapaNachos
        Link Parent
        I'll agree that it's an interesting visualization, but it's really not written well. The same point could be made a lot more clearly in maybe 3-4 paragraphs.

        I'll agree that it's an interesting visualization, but it's really not written well. The same point could be made a lot more clearly in maybe 3-4 paragraphs.

        1 vote
        1. Cirrus
          Link Parent
          Perhaps it could be explained more concisely, but then it might risk being too information dense and hard to read. I actually like the scattered anecdotes and stories, it helped break the article...

          Perhaps it could be explained more concisely, but then it might risk being too information dense and hard to read. I actually like the scattered anecdotes and stories, it helped break the article up and prevent it from being too dull and dry.

          4 votes