[smurfgirl]

If the robot is on, no one should be touching it, period. This is just common sense. If the robot is off, then it depends. Sticking your fingers into pinch points, pulling on wires or other fragile parts, or using the robot as a foot rest are all pretty bad ideas, for your sake and for the robot's sake. If you're a little kid, you might not have the discretion to know what parts you shouldn't stick your fingers in, so it's probably not too good for you to touch the robot either. Maybe under very close supervision if there is protection over the pinch points and fragile spots it could be a good learning experience for older kids. Usually adults realize what is appropriate touching, and what is not.