r ther any possibility that people was just think that their elo is the most important?
Why does everybody care about their elo that much?
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In my opinion, it is all about copepetivnes 
or vanity?
Even though elo is the thing that can show us the sport, but people started to care about their elo too much. Playing chess is to practice your logic thinking skills and your brain, but instead, people were playing chess for their elo.