An expert is the one who predicts the job will take the longest and cost the most.

"The Ninety-Ninety Rule of Project Schedules: The first ninety percent of the task takes ninety percent of the time, and the last ten percent takes the other ninety percent."

The compromise will always be more expensive than either of the suggestions it is compromising.

"If your project doesn't work, look for the part you didn't think was important."

"After an instrument has been assembled, extra components will be found on the work bench."