One important concept in Psychology, is the idea of inattentional blindness. Inattentional blindness is the failure to detect stimuli that are in plain sight when our attention is focused somewhere else. A closely related phenomenon is also change blindness, which is the failure to detect obvious changed in one’s environment. For example if the background of a video changed color, or anything similar to that. Furthermore, Inattentional blindness is crucial to our mental stability and survival skills, there are too many things going on in our environment, and if we were to focus on every aspect, we would inevitably be confused and become vulnerable prey. Focusing on what is important, is one of the reasons humans can survive in this world. Many of us have experienced a time where we are looking for something important, but we’re thinking of something else, or looking at something, and we fail to see we were looking for, and it’s right in front of our face. We are too focused on what were looking at, or the idea in our head, but we fail to see what is right in front of our eyes. Our eyes perceive the object or change, but our brain chooses to ignore it. The link below, is a short video, where participants are asked to account the amount of passes the team in white makes. Then, exactly in the middle of the videotape, a person dressed in a gorilla suit, goes through the team members and dances . Surprisingly, many of the participants did not even realize the gorilla passing through. This is a prime example of the extent to which inattentional blindness can effect our perception.