Productivity Science and Productivity Engineering - Gilbreth

The aim of motion study is to find and perpetuate the scheme of perfection. There are three stages in this
study:

1. Discovering and classifying the best practice.

2. Deducing the laws.

3. Applying the laws to standardize practice, either for the purpose of increasing output or decreasing hours of  labor, or both.


Source: MOTION STUDY - Frank B. Gilbreth (1911) - Part 1
http://nraoiekc.blogspot.com/2015/08/motion-study-frank-b-gilbreth-part-1.html

Observe the three steps to develop the productivity science and productivity engineering.

1. Discovering and classifying the best practice.

Observation, identification and recording the best practices in body motions are indicated in the first stage. This is the data collection stage for developing laws of productivity science.

2. Deducing the laws.

The second stage is data analysis from perspective of identifying the law. This is the developing the productivity science theory or law.

3. 3. Applying the laws to standardize practice, either for the purpose of increasing output or decreasing hours of  labor, or both.

This is productivity engineering stage. The law is applied to increase output or productivity.