The story
Published in 1774 by William Hooper.
Etymology from Wiktionary, CC BY-SA 4.0.
Hooper's paradox
Today it means: A falsidical paradox based on an optical illusion, where a geometric shape with an area of 32 units is dissected into four parts, which are then assembled into a rectangle with an area of only 30 units; however, the triangles of the dissected shape are not quite identical to the triangles in the rectangle. Full definition →