“…In cases where users can perform some aspects of the task, a robot can also assist by supplementing a user's existing abilities. For example, if a user can walk but has difficulty balancing or navigating, a smart walker can be utilized to help the user navigate between locations (Papageorgiou et al, 2019;Sierra et al, 2019). Similarly, if a user has some control over their limbs, an exoskeleton robot can be used to provide extra support for day-to-day usage (Baklouti et al, 2008;Lim et al, 2015;Choi et al, 2018;Nabipour and Moosavian, 2018) or in therapeutic scenarios in order to help a user strengthen weakened muscles (Carmichael and Liu, 2013;Zignoli et al, 2019).…”