RoboCop: The Oral History – PV: One extremely satisfactory scene is the one where RoboCop essentially walks over water at the steel mill. A day before filming, we saw that there were these big walls. And I came to think of them as the walls of Jerusalem. That wasn't in the script, but at that moment, we decided to write about him walking on water into the scene. We also invented the part where Clarence drops the steel bars on RoboCop's head at that moment. Those steel bars were just there, and hadn't been used for years. But seeing that scene come together — that was a beautiful moment.