the.com/stratagem

A plan smart enough to pretend it isn't one.

means A cunning scheme or trick designed to outwit an opponent or achieve a goal, especially in a contest or conflict.

from Traces back through French to the Greek 'strategema,' meaning the act of a general — rooted in 'strategos,' the word for military commander (itself a blend of 'stratos,' army, and 'agein,' to lead). So buried in the word is a literal general plotting troop movements; by the time it reached English it had widened from battlefield maneuvers to any clever ploy for getting the upper hand.

origin
Greek strategema, the general's trick
vs strategy
narrower, sneakier, usually involves deception
key feature
works best when the target never notices it
classic example
the Trojan horse, still undefeated
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