The primary thing when you take a sword in your hands is your intention to cut the enemy, whatever the means. Whenever you parry, hit, spring, strike or touch the enemy’s cutting sword, you must cut the enemy in the same movement. It is essential to attain this. If you think only of hitting, springing, striking or touching the enemy, you will not be able actually to cut him.
The McNamara fallacy, named for Robert McNamara, the US Secretary of Defense from 1961 to 1968, involves making a decision based solely on quantitative observations (or metrics) and ignoring all others. The reason given is often that these other observations cannot be proven.
The fallacy refers to McNamara's belief as to what led the United States to defeat in the Vietnam War—specifically, his quantification of success in the war (e.g., in terms of enemy body count), ignoring other variables.
I’ve written this before but I constantly need to remind myself of it, so, once again: A certain kind of work, lifestyle, mode of living — in and of itself — is protest. That is, work that is curious and rigorous is implicitly an antipode to didactic, shallow bombastity. It is inherently an archetype against bullshit. That to be committed to this work or life of rigor (be it rigor focused on “art” or, as they say in Japanese, sakuhin, or family or athleticism or whatever), and to share it with the world is to opt-out of being paralyzed by idiocy, and help others who may be paralyzed find a path back to whatever fecundity of life it is that they deserve.