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.
Start all of the pieces of work a little bit earlier. The key to starting work early is not succumbing to the pressure of having to finish the work. Don’t worry about finishing. If you’re a developer, you can start doing things while your design or information architect are working because a lot of your work actually isn’t dependent on their work. Some of it is, so you probably won’t be able to finish, but that shouldn’t stop you from starting.
Share Work-in-Progress Early and Often
When you share work-in-progress, share it with the caveat that no feedback is needed at this point. You’re simply sharing it to let people know where you are. For example, if you have to make 12 wireframes, share it when you finish 2 or 3. Rather than spending a whole week to drop 12 wireframes, share 2 – 3 wireframes every 2 days. The more often you do this, you start to build rhythm, and rhythm builds momentum.