the.com/opponent

The person proving your strategy wrong in real time, free of charge.

means A person who stands against you in a contest, argument, or game, trying to win where you're trying to win too.

from From Latin opponere, 'to set against' or 'place opposite' — ob- ('against') plus ponere ('to put, place'). The same ponere root gives English a whole family of 'positioning' words, like 'component' and 'deposit.' An opponent, literally, is just whoever's been put on the other side of the board from you.

etymology
latin for placed against
game theory
your best teacher has no obligation to be nice
sports psychology
studying them beats studying yourself alone
chess wisdom
the opponent is also trying to win
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