1. A robot system comprising: (a) a flexible artificial skin operable to be mechanically flexed under the control of a computational system, (b) a first set of software instructions operable to receive and process input images to determine whether at least one human likely is present, and (c) a second set of software instructions operable to determine a response to a determined likely human presence, whereby the computational system shall output signals corresponding to the response, such that, in at least some instances, the output signals cause the controlled flexing of the artificial skin.