When I build websites, I go ask the end users (via testing) what they want, and then try to deliver that. I guess this principle doesn't apply to robotics?
Has anyone ask the Japanese elderly what they want? Or might use? Or was it concerned younger folk, who have no idea what it's like to be old, dreaming these robots up?
Anything that forced mental-agility quizzes on me would get crushed under my zimmer frame.