PlanTech: DRBFM-"The Next Big Thing" in Quality Disciplines.

PlanTech: DRBFM-"The Next Big Thing" in Quality Disciplines.: "Good Design
The basis for reliability is to not change the design. It is the equivalent of Just-in-Time in the manufacturing process. Disturbances of Just-in-Time in manufacturing are the increases or depletions to the planned inventory.
Mr. Yoshimura believes one can preserve reliability in a proven design by not changing it. If the design is changed, it should be done in small increments. The disturbance to a design is the discontinuity caused by a design change affecting the interfaces between parts. The design should not be changed simultaneously in two places. Making too many changes too fast will result in failures faster than our capacity to detect. The key is to make design changes visible. "