Not many: 20 out of 24 missed it entirely. They had fallen prey to a phenomenon called “inattentional blindness,” a phenomenon in which our careful attention to one task leads us to miss important information that’s unrelated to that task. Inattentional blindness leads to a lack of peripheral vision. When it’s coupled with time pressure, it can create a lack of curiosity. I’ve got to stay focused on what I’m doing.