Research challenges related to human robot collaboration (HRC) include mainly (a) teaching the robot and avoidance of unintended consequences; (b) considering how both human and robot have mutual models of each other; (c) coping with user culture and fears . The last point “(c)” deal with the primary recommendations of the DARPA-NSF study on human robot interaction, which was the need for interdisciplinary research in human-robot interaction, including researchers from the fields of psychology and human factors.