"While jogging one afternoon, she spots a young boy on the road. He is wearing a familiar-looking sweater; it is made of blue wool, with zebras at the foot of a snowy mountain. She stops him, turns down his collar—and sees her name written on the tag. It's the sweater she donated 11 years earlier. The encounter convinces her that all of us are interconnected: 'Our actions—and inaction—touch people every day across the globe, people we may never know and never meet.'"
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