The first ninety percent of a task takes ninety percent of the time. The last ten percent of a task takes the other ninety percent. The man who can smile when things go wrong has thought of someone he can blame it on. The solution to a problem changes the problem. Robert E. Lee's Truce Judgment comes from experience.
Experience comes from poor judgment.
It works better if you plug it in. Shaw's Principle Build a system that even an idiot can use and only idiots will want to use it. An object or piece of information most needed will be least available. Any device requiring service or adjustment will be least accessible. Interchangeable parts aren't. 5.