The last 10 percent of performance generates one-third of the cost and two-thirds of the problems.

Simple systems are not feasible because they require infinite testing.

Pleasure in the job puts perfection in the work.

One-tenth of the participants produce over one-third of the output. Increasing the number of participants merely reduces the average output.

The weaker the data available upon which to base one's conclusion, the greater the precision which should be quoted in order to give the data authenticity.

Rank does not intimidate hardware. Neither does the lack of rank.