Holy adversary

The idea of the adversary as something holy, a holy role for growth.AAanon
The adversarial system or adversary system is a legal system used in the common law countries where two advocates represent their parties' case or position before an impartial person or group of people, usually a judge or jury, who attempt to determine the truth and pass judgment accordingly.Adversarial system, Wk, Gs q, woq.
Adversarial
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Challenger; Competition
Xenoadversarialism
Parallel thinkingWikipedia lists this under Adversarial system, and notes { described as a systemic alternative }.