The Walton Lab was out in force on Saturday as part of the Brain Diaries exhibition at the Natural History Museum in Oxford. Visitors got to play a "Dopamine Dipper" marbles game to learn about prediction errors, and experienced a "Heavy Feet Challenge" as a platform to discuss how dopamine influences motivation, effort and decision making. Most importantly, all attendees were thoroughly disabused of any ideas from the media that dopamine is necessary for pleasure and happiness.