When you’re in a situation where you have to collaborate with other people, it’s easy to get stuck in a sludge of unproductivity. So we’re borrowing an exercise from the world of improv comedy, “Yes, And… ,” which is used to keep conversation flowing. Instead of shutting down the other person’s ideas with “no” or “but,” you build upon them. Molly Lloyd from the improv theatre Upright Citizens Brigade guides us through this week’s challenge — and you might be surprised where it can take you.