Müller-Lyer illusion

The Müller-Lyer illusion is a visual phenomenon where two lines of the same length appear different in length due to the shapes at their ends. One line ends with arrow-like tails pointing inward, while the other has tails pointing outward. Despite both lines being equal, the one with inward-pointing tails often looks shorter. This illusion highlights how our perception can be influenced by surrounding visual cues, demonstrating that what we see can differ from objective reality. It's a fascinating example of how our brains interpret visual information based on context.