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.
We designers love artboards. From rough UI sketches to high fidelity mockups, we see ourselves as visual artists expressing ideas on artboards that have a pre-defined width and height. To start a new project, we declare the size of the artboard in the first step.
What about responsive design? Not a problem! We diligently design on three artboards — one for mobile, one for tablet, and one for desktop — with content elegantly adapting, scaling, reflowing, reordering, and reprioritizing. We proudly hand off the artboards to developers while patting ourselves on the back: this is how responsive design should be done.
After weeks of arduous engineering, the product finally comes out. We find, to our great dismay, that some copy is hanging off the grid, the focal point of the hero image has been cropped out, the font sizes don’t even come close to the type ramp. What went wrong? Can’t the developers just see everything on all those artboards?