Eli5 What exactly is a tesseract?

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Please explain like I’m actually 5. I’m scientifically illiterate.

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Anonymous 0 Comments

If you shine a light on a 3d object like a cube it casts a 2d shadow on the wall that looks like a diamond shape. If you shine a light on a 4d object, it casts a 3d shadow in the shape of a tesseract. We can’t imagine the 4d shape cause we live in a 3d world but we can imagine the 3d shadow.

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