“…Different approaches to the definition of a hierarchical level of labor productivity boundaries were developed. As an example: Area, activity and, task [99]; project, division, activity, task, elemental motion, orthopedics and, cell [100]; project, division, activity, basic task and, elemental motion [101] and; activity, task, action and, movement [102]. Throughout times, the CI seeks to increase its performance through tasks' mechanization [103].…”