YouTuber Mustafa has created a video called 'Making Strangers Smile', and it will make you grin as well. He attached a note saying smile. you deserve to be happy onto a few Hershey's bars and handed them out to random strangers on a college campus.
Psychologist Elizabeth Loftus studies memories. More precisely, she studies false memories, when people either remember things that didn't happen or remember them differently from the way they really were.