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.
Jakob Nielsen says that Flash is “99% bad.” I have to agree. Flash always reduces usability.
On the other hand, every time I read Jakob Nielsen, I get this feeling that he really doesn’t appreciate that usability is not the most important thing on earth. Sure, usability is important (I wrote a whole book about it). But it is simply not everyone’s number one priority, nor should it be. You get the feeling that if Mr Nielsen designed a singles bar, it would be well lit, clean, with giant menus printed in Arial 14 point, and you’d never have to wait to get a drink. But nobody would go there, they would all be at Coyote Ugly Saloon pouring beer on each other.