In a video that went viral, the problem of situational awareness was demonstrated when viewers were asked to watch carefully and count the number of times a team of basketball players wearing white passed the basketball back and forth while playing against a team wearing black. During the gameplay, a gorilla-suited human walked on to the scene, stood in the midst of the players, beat his chest for a few seconds, and then exited. Because of situational awareness, a large percentage of viewers did not "see" the gorilla at all.