A human's ability to perform physical tasks is limited not by intellect but by physical

Chapter 0, Problem AP6.7

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A human's ability to perform physical tasks is limited not by intellect but by physical strength. If, in an appropriate environment, a machine's mechanical power is closely integrated with a human arm's mechanical strength under the control of the human intellect, the resulting system will be superior to a loosely integrated combination of a human and a fully automated robot. Extenders are defined as a class of robot manipulators that extend the strength of the human arm while maintaining human control of the task [23].The defining characteristic of an extender is the transmission of both power and information signals. The extender is worn by the human; the physical contact between the extender