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.
Historically, Japan's shrines have been built in order to worship the gods who live in the sacred mountains or seas; They don't reside in the shrine itself, but in the space beyond it. This belief that the spirits and deities exist beyond the confines of the shrine, and that the shrine itself acts not as a centre, but as a kind of gateway, is very different to the grand, imposing churches and cathedrals of Christianity.
The majority of shrines are not found in the mountains or in the middle of the fields, therefore, but at the borders of mountain villages – which is to say, at what is seen as the edge of the mountains. The tori gate, marking the entrance to a shrine, indicates that there are gods on the other side of it.