“…We also discarded 20 studies in domains unrelated to food, such as, robotic surgery, space exploration, nano-robots for drug delivery, use of robots in drug discovery, wireless sensor networks, and, MEMS (micro-electromechanical systems). From the remaining 23 articles, we further eliminated those that were in the fields of agriculture and farming [20], food delivery using nano-particles [22], ingestible nano-robots for diagnosis [23], battlefield operations [24], and, feature descriptions of specific industrial robot models [21]. This yielded a reduced set of 18 articles.…”