You nod along as your friend explains their entire weekend, nodding, nodding, really present—until they say "so anyway" and you realize you have no idea if they went to a wedding or got divorced. You panic-nod harder, hoping context clues will materialize. They ask what you think. You say "yeah, that's crazy," which works until they say "so you agree I should keep it?" and you're nodding at what might be a decision about a job, a relationship, or a haunted lamp.