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.
A lot of people think dreams and drugs involve some magical inspiration. I think otherwise.
I rarely get inspired by dreams or drugs, but I have my own secret source of inspiration: mishearing other people. Somebody says something, I misinterpret it, and the misinterpretation is quite interesting – more interesting than anything I would have come up with on my own if asked to generate an interesting idea. Maybe it’s a clever joke or turn of phrase. Maybe it’s a neat idea. Sometimes I misunderstand people’s entire positions, and end up with positions much more interesting than the ones they were trying to push.