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.
“Make the best use of what is in your power, and take the rest as it happens.”
“Genuine good taste consists in saying much in few words, in choosing among our thoughts, in having order and arrangement in what we say, and in speaking with composure.”