I also know that in the second movie, the sequel, Eric made some huge advances with the robot suit. That just made it even better. You put the suit on and moved your arms then the robot's arms would move in sync with yours.
“I'm very conscious that I'm in the minority in that I love what I do. How big is the number of people who are running to work to do a job that they like? And how lucky to be employed at it - how incredibly lucky.”