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.
Craftsmanship is about thoughtfulness and care in the work we do. It means being deliberate about what we build and how possible it will be to maintain and extend in the future. A solution that will require revisiting in a month — because it’s not scaling, because it has a ton of bugs, because it doesn’t support all the use cases it needs to — is not useful to us and ultimately will generate pain for our users.
What we trade off by living this value is (sometimes) day-to-day speed. It’s easy to imagine an engineering team that emphasizes moving fast over keeping things stable and bug-free -- like a team building a product that isn’t responsible for important user data and doesn’t support anyone’s livelihood. But given the role the Figma product plays in the lives of our users, we feel it’s worth it to ensure we hold a high quality bar for them. And in the long run, being thoughtful about how we build often reduces the complexity of ongoing development and new features regardless.