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When was the last time you looked up at the sky? No, really. Think about it. When did you last stop what you were doing to tilt your head, gaze up, and admire wisps of clouds or an array of stars? How about the last time you said “hello” to a stranger or started a conversation with someone you didn’t know? If your answer is “not much lately” or “maybe sometime last summer” or “I just haven’t”...