Therblig

A workplace task is analyzed by recording each of the therblig units for a process, with the results used for optimization of manual labour by eliminating unneeded movements.

The word therblig was the creation of Frank Bunker Gilbreth and Lillian Moller Gilbreth, American industrial psychologists who invented the field of time and motion study.

Here is an example of how therbligs can be used to analyze motion:[1] ...Suppose a man goes into a bathroom and shave[s].

We'll assume that his face is all lathered and that he is ready to pick up his razor.

Third comes "select", the process of sliding the razor prior to the fourth Therblig, "grasp".

There are eleven other Therbligs—the last one is "think"!In an article published in 1915, Frank Gilbreth wrote of 16 elements: "The elements of a cycle of decisions and motions, either running partly or wholly concurrently with other elements in the same or other cycles, consist of the following, arranged in varying sequences: 1.