In military intelligence, the "Tenth Man" is a designated role: when nine analysts agree on a conclusion, the tenth is obligated to argue the opposite, no matter how certain the consensus appears. The doctrine exists because comfortable consensus kills.

The same failure mode plays out in every boardroom, every founder's decision, every strategic bet made under pressure. The people around you have incentive structures that bias toward agreement. Your AI tools are even worse: they're trained to be helpful first, which means they're trained to tell you what you want to hear.

Tenth Man is adversarial decision intelligence.

You describe a high-stakes decision, and three independent AI agents analyze it. 

One builds the case. One is structurally designed to tear it apart. One arbitrates, picks a side, and tells you exactly what remains unresolved.

Every argument is transparent, every disagreement is preserved.

The dissent is the point. Most AI optimizes for agreement. Tenth Man is built to disagree.

Tenth Man

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Tenth Man

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