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  • I don't know how many dimensions you need to achieve social distancing like this.

  • Actually, answering your question, I think the answer is two. They could be at equidistant points on a sphere, with 1.5 m between them on the 2D surface. Or they could be on a slightly bigger sphere, with 1.5 m along the edges of the tetrahedron in 3D space.

    1. A sphere is a 3d construct, so 2 isn't enough.
    2. For it to have any chance of working, with fudged projections even, the sphere would have to be quite a small one compared to our actual planet.
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