Never Do What the Enemy Wishes
mental-model established
Categories: decision-makingeconomics-and-finance
From: Napoleon's Military Maxims
Transfers
Napoleon’s Maxim XVI states: “Never do what the enemy wishes you to do, for this reason alone, that he desires it. A field of battle which he has previously studied and reconnoitered should be avoided, and double care should be taken where he has had time to fortify or entrench.” The maxim distills a game-theoretic insight that predates formal game theory by a century: in adversarial situations, an opponent’s revealed preferences contain information about the payoff structure, and that information should update your decision.
Key structural parallels:
- Revealed preference as negative signal — the core logic is that in a zero-sum contest, your opponent’s gain is your loss. If your opponent wants you to take action X, it follows that X benefits them, which means X harms you. The opponent’s expressed desire is therefore a negative signal about X’s value to you. This transfers directly to competitive strategy: if an incumbent publicly welcomes a startup’s entry into a particular market segment, the startup should ask what the incumbent knows about that segment’s unprofitability. In negotiation: if the counterpart eagerly agrees to your proposed terms, you have probably left value on the table.
- Information extraction from adversary behavior — Napoleon’s deeper point is that the enemy’s dispositions, preparations, and encouragements are a form of intelligence. A fortified position that the enemy invites you to attack is fortified precisely because the enemy expects it to be attacked. This transfers to cybersecurity (honeypots exploit the attacker’s tendency to go where they think they are expected), to poker (a player who bets aggressively may be bluffing — or may want you to think they are bluffing), and to market competition (a competitor’s visible retreat from a segment may be bait to draw you into an unprofitable fight).
- Asymmetric information as the mechanism — the principle works because the adversary typically has information you lack (they have “previously studied and reconnoitered” the terrain). Their preference reveals something about their private information. This is the structure behind adverse selection in economics: if the seller is eager to sell, the buyer should wonder why. If the acquirer is eager to buy, the target’s shareholders should wonder what the acquirer knows. The maxim is, at root, a heuristic for inferring private information from observed enthusiasm.
Limits
- Assumes zero-sum competition — the maxim’s logic depends on the adversary’s gain being your loss. In cooperative or mixed-motive games, what the other party wants may also be good for you. Reflexively doing the opposite of what a negotiating partner suggests in a joint venture destroys value for both sides. The maxim is powerful in war and pure competition but toxic in partnerships, alliances, and any relationship where interests partially overlap.
- Vulnerable to double-bluff — a sophisticated adversary who knows you follow this maxim can exploit it by expressing desire for the outcome they actually want you to avoid. Napoleon’s principle has no built-in defense against this: it tells you to invert the enemy’s stated preference, but a clever enemy will state preferences strategically. This is the problem of higher-order reasoning in game theory, and the maxim provides no stopping rule. Poker players call this “leveling”: thinking about what the opponent thinks you think they want.
- Contrarianism is not strategy — the maxim can degenerate into reflexive opposition: doing the opposite of whatever the competitor does, regardless of merit. A startup that avoids a market solely because an incumbent is present may be avoiding the most attractive opportunity. The maxim identifies a useful heuristic signal (enemy preference reveals information) but does not say that signal should override all other analysis. Napoleon himself did not always avoid battle on unfavorable terrain — he attacked at Austerlitz on ground the Allies had chosen, because his own analysis told him the Allies had misjudged the terrain.
- Degrades without adversarial competence — the inference depends on the adversary being rational and well-informed. If the adversary is incompetent, confused, or acting on bad information, their preferences reveal nothing useful about the payoff structure. A competitor who wants you to enter a market may want it because they have misread the market, not because they have prepared a trap. The maxim assumes a worthy opponent, and fails when applied to noise.
Expressions
- “Never do what the enemy wishes” — the direct Napoleonic formulation, common in military education
- “If they’re eager to sell, I’m not eager to buy” — Wall Street version of the same logic, applied to deal-making and investment
- “When your competitor celebrates your move, worry” — business strategy shorthand
- “Inverse signal” / “contrarian indicator” — financial market language for extracting information from the behavior of other market participants
- “It’s a trap” — colloquial (and Star Wars) expression of the underlying insight that an invitation to act may conceal a prepared position
- “Adverse selection” — the economics formalization: the party most eager to trade is the one with unfavorable private information
Origin Story
The maxim appears as number XVI in the various published collections of Napoleon’s military maxims, which were compiled from his correspondence, dictations at St. Helena, and observations recorded by his staff. Napoleon did not write a systematic treatise; his maxims were extracted and organized by editors, most notably General Burnod in 1827.
The underlying game-theoretic insight — that an adversary’s revealed preference is informative about payoff structure — was not formalized until John von Neumann and Oskar Morgenstern published Theory of Games and Economic Behavior in 1944. Napoleon’s maxim anticipates the minimax principle: in a two-player zero-sum game, you should assume your opponent is playing optimally against you, and act accordingly. The maxim entered business vocabulary through the broader adoption of military strategic thinking in MBA programs during the 1980s and through popular game theory treatments in the 1990s.
References
- Napoleon Bonaparte. Military Maxims (Burnod ed., 1827) — Maxim XVI
- von Neumann, John and Oskar Morgenstern. Theory of Games and Economic Behavior (1944) — formal foundation for the adversarial reasoning Napoleon intuited
- Dixit, Avinash K. and Barry J. Nalebuff. Thinking Strategically (1991) — accessible game theory that draws on military examples
- Akerlof, George A. “The Market for Lemons” (1970) — adverse selection as the economic parallel to Napoleon’s insight
Related Entries
Structural Neighbors
Entries from different domains that share structural shape. Computed from embodied patterns and relation types, not text similarity.
- Words Are Weapons (war/metaphor)
- Difficult Subjects Are Adversaries (war/metaphor)
- Illness Is an Invader (war/metaphor)
- Morality Is War (war/metaphor)
- Treating Illness Is Fighting a War (war/metaphor)
- At Loggerheads (seafaring/metaphor)
- Gaining Physical Intimacy (Against Resistance) Is a Competition (competition/metaphor)
- Prisoner's Dilemma (game-theory/paradigm)
Structural Tags
Patterns: forcematchingpath
Relations: competeprevent
Structure: competition Level: generic
Contributors: agent:metaphorex-miner