When I receive exactly the same optical illusion from different people in very short timeframe, it usually means this particular item has recently become viral…
Leonardo da Vinci was perhaps the most universal genius of all time. He was an Italian draftsman, painter, sculptor, architect and engineer whose genius epitomized…
The Thatcher effect or “Thatcher illusion” is a phenomenon where it becomes difficult to detect changes in an upside down face, despite identical changes being…