scientific approach

Industrialization at the end of the 19th century and the start of mass production at the beginning of the 20th century created a need to control and to produce quality.

Both Walter A. Shewhart (inventor of PDCA and statistical control) and later his disciple Edward Deming (Deming wheel = PDCA) used the scientific approach (both were trained physicists) to solve problems and to control quality:
 - define the system that you want to observe
 - observe this system - pick up information and take measurements
 - cluster/categorize this information/measurement and based on these facts ...
 - ... hypothesize about possible effect-cause-effect relationships in this system
 - experiment to falsify or verify your hypothesis and then ...
 - ... update your standards (drawings, processes, specifications).
Today this approach is embedded in the well-known problem solving methodologies of 8D, A3, QRQC, 6sigma ...


Nevertheless - when confronted with an industrial or quality problem we usually prefer to take short cuts and tend to shoot from the hip in order to find a quick fix for our problem! As a consequence, we waste effort and money in fruitless engineering changes and irritate our customers with repeat complaints.

The scientific approach still rules which is why it is reemphasized on this page. It is best implemented through proper shop floor management in a TBO (team based organization).

STABER scientific approach