“And when he came to our runthrough on the stage, it just so happened that Simon had to be doing an impression of him. Simon was like, “Oh my God.” He did the scene and then immediately turned to Professor Hawking and said, “I’m so sorry! They made me do it!” And everyone cracked up. But then a buzzer on his wheelchair went off, and we saw his handlers come in to move and check things, and we were so concerned. My first thought was, Oh my God, Simon, you killed Stephen Hawking! But his handler assured us, “No, he was laughing!” The only way he could communicate was off of his glasses with a sensor on his cheek, so the buzzer would go off when he laughed. We were like, “Thank God!” He just had the best time seeing behind the scenes of our world and how it was done. I still can’t believe it.”