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Do you ever find yourself on a crowded train, surrounded by people all looking at their phones? What do you think would happen if you tried to strike up a conversation with the person next to you? Chicago Booth's Nick Epley tells us about his book, "A Little More Social: How Small Choices Create Unexpected Happiness, Health, and Connection." This is the first of two podcast episodes about the book. Epley says if we chose to have that conversation, it'd be more pleasant than we expect. So why do we set up our lives to avoid talking to others?