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For questions pertaining to the structure or number of realities in a fictional setting. Soft sci-fi dimensions are often "alternate planes" separate from the "real" plane; think "hyperspace." Hard sci-fi dimensions use the mathematical concept of dimensions, in which 1-D space is defined as a line, 2-D space is defined as a plane, 3-D space typically produces Euclidean geometry, and 4-D+ space has exotic properties.

8 votes

Is there a good geometric analogy for a 'trap' dimension that you can stumble into easily bu...

If you're willing to give up "once you’re inside, the outside edges wrap around and you find yourself back where you started if you keep travelling", then you can satisfy the rest of your question's r …
Joseph Sible-Reinstate Monica's user avatar