Rivalry is everywhere. We see rivalries in sports, business, school, and basically any arena where there is competition. Whether it is rivalry between people (Bill Gates versus Steve Jobs; Roger Federer versus Rafael Nadal), between organizations (e.g., Ford versus GM), or between nations (e.g., should U.S. soccer fans have rooted for rival Mexico in the World Cup?), there is something uniquely powerful about rivalry that differentiates it from others forms of competition and relationships.
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