Thread

1. tananaev · 1790357838 · focus · HN ↗

   I think the box explanation is misleading. There isn't literally a box whose surface you measure. The idea is that the state of a higher-dimensional gravitational system can, in some cases, be completely described by a theory in one fewer dimension.

   1. int_19h · 1790382635 · focus · HN ↗

      For black holes it is quite literal tho.
   2. camel_gopher · 1790385503 · focus · HN ↗

      So like describing the properties of a sphere by using a circle.

      1. danparsonson · 1790389119 · focus · HN ↗

         Not a circle but the surface of the sphere
   3. rkagerer · 1790386698 · focus · HN ↗

      Is the "in some cases" constraint really necessary? I thought Bousso's whole point in his talk linked elsewhere in this thread is that you can describe a 3D system in terms of 2D information.

      Could you keep going, fully describing systems of higher order in less and less dimensions?

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