Have you ever been so laser focused on a task—playing a video game, reading an engrossing book, and so on—that when you look up, hours have suddenly gone by? This is commonly referred to as flow state: a state of absorbed concentration and a distorted sense of time. Studies have shown that working in the flow state has a positive impact on happiness and productivity. A new Caltech-led study examines the phenomenon of "team flow," where individuals work in a flow state with others. Like a