one of the manual, visual, or mental elements into which an industrial manual operation may be analyzed in time and motion study; a symbol devised for representing a therblig in writing or notation… See the full definition
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The person you are referring to is a handwriting expert, NOT a motion in time expert.
Motion In Time (MIT) is the study of human manipulation and interaction with tools in the assembly of mechanical parts and human interaction with machines (including computers). Each action can be broken down into discreet units called "therbligs"***. MIT studies can then be used for many valuable determinations in the areas of manufacturing and human interface design. (I know this because my bachelor's is in Industrial Technology. An area your "expert" has no background in.
Given YOUR claim of what the expert said, it is wrong. It is very well within the realm of possibility that 155 Level 1 verifiers could process 270,000 security envelopes over a 3 day period as I've mathematically shown which disproves your statement.
Not, again, if you feel my math is wrong about something YOU said - then let's discuss the math instead of your use of an appeal to authority fallacy.
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The term "therblig" is actually "Gilbreth" loosly spelled backward for Frank Gilbreath an Industrial Engineer from the early 1900's who pioneered manufacturing efficacies be examining work.
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