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A comment on New study overturns 100-year-old understanding of color perception. Parent comment

Re:New study overturns 100-year-old understanding of color p... by OscarCunningham on Thursday August 11, 2022 @03:45AM (#32422695)
They're saying it's not just non-Euclidean but also non-Riemannian. The distance between two points is shorter than the length of the shortest path between them.

For a simple example of such a space, imagine a circle where we define the distance between two points to be measured 'as the crow flies', but we demand that all paths remain on the circle rather than passing through its interior.

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Re:New study overturns 100-year-old understanding of color p... by quickthrower2 on Thursday August 11, 2022 @07:20AM (#32424066)
That example would be similar to using as the crow flies for distances when driving on roads.
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