The Gorilla Experiment is a famous psychological study conducted by Daniel Simons and Christopher Chabris in 1999. In this experiment, participants watched a video of people passing a basketball and were instructed to count how many times the ball was passed. During the video, a person in a gorilla suit walked through the scene, yet many participants failed to notice the gorilla due to their focus on counting. This phenomenon is known as inattentional blindness, which illustrates how people can miss unexpected events when concentrating on a specific task. The experiment highlights the limitations of human attention and has implications for fields like psychology, cognitive science, and even law enforcement.