S10E22 “They Saved Lisa’s Brain”

  • PhlubbaDubba@lemm.ee
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    2 months ago

    For those curious, the donut shaped universe shown isn’t what the theoretical universe model actually looks like,

    What it represents is an “asteroids like” geometry of a two dimensional universe where exiting one “side” brings you to a corresponding point on the other.

    The proposed donut geometry of the universe is what’s called a 3-roid or 3-tauroid, which is basically the same idea as the asteroids like 2D universe but for a prism instead of a rectangle. Meaning that our ability to return to the starting point is based on the fact that we are moving along a 3-D “surface” of a 4th dimensional object, the way the Asteroids ship loops back to the start by moving across the 2-dimensional surface of a 3-D geometry.

    Part of me wonders if this means that the actual boundaries of the universe are at 0+ and 0- along the W/A axis in 4-D space, and if that means that every character who has some power related to moving in 4-D space would actually just fall out of space and time if they ever tried using their abilities for real.

    • TheObviousSolution@lemm.ee
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      2 months ago

      I forgot about this paper, but I am toying with a spacetime hypothesis where it and your notes are on point. Well, except for the end.

  • Skvlp@lemm.ee
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    2 months ago

    Since it’s useless to post links like this without an AI summary:

    Physicists report the possibility of the universe having a complex, doughnut-like geometry, challenging the belief in its trivial topology.

    Topology

    The universe may have nontrivial topology, similar to a doughnut, allowing for travel across the cosmos and ending up back where you started.

    Research

    Scientists have searched for signs of complex topology in the cosmic microwave background, but have not found evidence yet.

    New Study

    A new study evaluated 17 possible nontrivial topologies for the cosmos, finding that most of these topologies have not been ruled out.

    Future Analysis

    Future analyses of the cosmic microwave background could reveal hints of complex topologies, and machine learning techniques may be required for computational challenges.

    Motivation

    There is motivation to look for nontrivial topology as some features of the cosmic microwave background hint at asymmetry, which could be explained by nontrivial topology.

    Further Research

    Scientists plan to hunt for signs of nontrivial topology in upcoming data from surveys of the distribution of galaxies in the cosmos.

    • sus@programming.dev
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      2 months ago

      this summary doesn’t have some information that is pretty critical if you want to compare it to the meme

      Searches for that simple 3-torus have come up empty. But scientists haven’t yet searched for some 3-torus variations. For example, the sides of the cube might be twisted relative to one another. In such a universe, exiting the top of the cube would bring you back to the bottom, but rotated by, for example, 180 degrees.

      So to ruin thine dreams, a summary:

      Season 10 was in 1998

      A “donut-shaped” universe (3-torus) was proposed in 1984 (the paper also points out it’s the simplest finite 3d topology, so it’s probably been considered even earlier)

      This article talks about more complicated “donut shapes” that haven’t been ruled out before