Robots exist for so many different reasons. Many robots replace humans, whether
it's because a situation is dangerous or just tedious. There are rover robots to
explore space and drone robots that play a part in our military today, but then
there are also vacuum robots available for the average household's chores. In
Japan, there is a robot teacher that can mimic a wide range of human
emotions?including anger at uncooperative students?thanks to eighteen small
motors hidden beneath the latex skin covering her face. The Japanese government
hopes to use robots to fill jobs left vacant by an anticipated labor shortage
due to an aging population. In