"Nanites are very very tiny robots that are so small that can't be seen with the naked eye. They are in my body and do a lot of jobs like repair me when I've been injured." It'd be difficult to fully explain everything they did to someone who didn't understand technological advances of today." Tony pulled off his very cool Ray Bans and held them out to her. "Here, you can wear these if the light's bothering you. I used to have trouble with migraines so I know how light can be such a pain."