John Boyd really liked Miyamoto Musashi’s 1645 treatise on swordfighting, A Book of Five Rings. In that same vein, he was a big fan of The Japanese Art of War by Thomas Cleary, a work that includes excerpts from Musashi and quotes from several other samurai and Zen masters of that period. Both of these books emphasize preparing an opponent mentally before risking an attack, a theme that also runs through Sun Tzu and that forms the foundation for much of Boyd’s Discourse.
As an aside, the parallels between fencing and dueling in the skies over southern Nevada are too close to ignore.
It’s always good, then, to receive a paper by someone who knows both fencing and Boyd. Here’s a new one for you, Nick Johnson’s “Boyd’s Real OODA Loop and Fencing,” which I’ve uploaded to the Articles page.