Human-centered design requires us to observe human behavior with beginner's eyes, so that we can spot the innate ways people interact with the world around them. We call these intuitive and unconscious reactions Thoughtless Acts, and IDEO designers collect photos of them to inspire their work.
I took this picture at the beach festival in Chiba, Japan. Sudden rain is hard to avoid in the Japanese summer. When it started pouring at the beach, a man covered himself with the tarp he had been sitting on. After about five minutes, a bunch of people joined him under the tarp, which had been turned into an improvised umbrella. I loved that the man helped his fellow festival-goers escape the rain without a second thought.