My book! A Guide to Making Friends in the Fourth Dimension: https://tibees.com/
This video is based on a 1978 article by Scott Kim titled An Impossible Four-Dimensional Illusion. It was published in the book Hypergraphics by David Brisson. I read it in the Hypergraphics book and have not found an open access online verison of the article. Here are a list of libraries that stock hypergraphics: https://search.worldcat.org/title/1109796884
This website provides PDF nets of the shapes needed to construct the model (which I found after I made mine oops): https://www.cutoutfoldup.com/1125-impossible-4-d-quadrilateral.php
Scott Kim's website: https://www.scottkim.com/
Stack exchange post with comment from Scott Kim: https://math.stackexchange.com/questions/355251/optical-illusion-in-4d
Scott Kim is also on YouTube https://youtu.be/Pz616L1D5fc?si=1AFe2J-fFqtxw-M8
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Editing by Noor Hanania
