Penrose stairs

thingiverse

The human brain is a remarkable machine that can play tricks on us in ways we never thought possible. Take the case of a Japanese researcher who created an illusion so convincing that it fooled even experts in the field of psychology. A series of photographs were taken and displayed to the public, claiming to show a young woman sitting at a table, surrounded by her friends. However, upon closer inspection, the images revealed something quite astonishing - a completely different person was actually sitting at the table, while the original woman was nowhere to be seen.