What is Tesseract?
1.
The four-dimensional equivalent of a cube.
A person using a tesseract in three-dimensional space would be equivalent to a person using three dimensions to move through a two-dimensional universe. The laws of physics would still apply, but only on the two-dimensional scale.
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Harry Potter in Harry Potter and the Deathly Hallows.
Harry Potter is Undesirable Number 1.
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