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.
Design means something even broader now. Sometime around World War II, it came to mean making things that “solve problems.” With the influence of mid-century global social movements and the rise of digital technology, it began to mean making things that are “human-centered.” And as of recently, design doesn’t have to involve making things at all. It can just mean a way of thinking.
Of all these developments, the idea of design as a broadly applicable way of thinking—the idea of “design thinking”—may end up being the most influential…At Stanford’s d.school, as cofounder Robert Sutton has said, “design thinking” is often treated “more like a religion than a set of practices for sparking creativity.”