“Attack him where he is unprepared, appear where you are not expected.”
Advantage comes from hitting where defense is absent and showing up where you were not predicted.
The catalogue’s closing crescendo — the stratagem that completes the chapter: attack him where he is unprepared, appear where you are not expected. This is the curated version’s twin, filed in the list; placed last, it functions as the catalogue’s summary device. Every prior entry — the baits, the irritation, the separation — exists to create the unpreparedness that this verse exploits.
A fintech spends its visible energy fighting for bank partnerships — the expected front, complete with conference keynotes announcing the commitment. Its actual launch arrives through bookkeeping firms: unglamorous, unwatched, and collectively serving the same small businesses the banks were slow to serve. When the banks finally notice, the fintech is the incumbent in a channel they never defended, and the keynote circuit had been the diversion all along.
The unexpected works once per audience — bookkeeping firms are now an expected channel, and the verse itself implies the motion: appear where you are not expected, and having appeared there, you are expected. This is why it crowns a chapter about variation: the device is not a place but the act of finding the next one, which no list can hold.