HackerTube / Video
selective attention test
Daniel Simons

The original invisible gorilla awareness test by Daniel Simons and Christopher Chabris, in which viewers count basketball passes and often miss a gorilla crossing the scene. It demonstrates inattentional blindness.
HN uses it constantly as the classic demonstration that attention is selective, in threads on driving, motorcycles, AI and perception.
20 Hacker News mentions · 2011–2025