- every engineer is different: to be most effective, engineer must plan their work and they must base their plans on their own personal data.
- to consistently improve their performance, engineers must personally use well-defined and measured process
- to produce quality products, engineers must feel personally responsible for the quality of their products. Superior products are not produced by mistake: engineers must strive to do quality work.
- it costs less to find and fix defects earlier in a process than later
-it is more efficient to prevent defects than to find and fix them.
- the right way is always the fastest and cheapest way to do a job.