Ever get so caught up in a task that you don’t notice something in plain sight? There’s actually a term for that — inattentional blindness — a state of unseeing created by where you’re focusing your attention.
A famous example of inattentional blindness is the invisible gorilla study. Before participants watch a video of two teams of three people passing a basketball, they are told to carefully count the number of passes made by the team dressed in white (the other is dressed in black). Halfway through the video, a woman in a gorilla suit walks through to the middle of the screen, beats her chest, and then walks offscreen.