The New England Aquarium hosted Rafe for a discussion of Learning from the Octopus. It was an emotional event, coming just a week after the Boston Marathon bombings. But the adaptability of a city like Boston is imparted in part by its strong tribal identity. When we see tribes we identify with under attack, we tend to think it’s us that’s under attack. So even as Bostonians reaffirmed their tribal identity (“We Ah Boston Strong,” read one sign at the first Bruins game after the bombings), runners across the country held charity events for Boston’s victims, and they even sang “Sweet Caroline” in Yankee stadium.