[ WP ] You 're a substitute teacher . You come into class and find out its nuclear physics . Unfortunately , you 're not a nuclear physics teacher . Luckily , you 're a substitute acting teacher .

`` Hello everyone!'' 
 The class was filled with extremely serious bright young students. It was Caltech after all. I wondered why they needed an acting coach anyway. 
 `` I'm here to talk about physics''. I had decided to test my acting skills when I realised I had entered the wrong class. 
 `` Physics has evolved leaps and bounds since the days of Newton and Einstein. It was difficult, the physics of old. The modern day physics is nothing like it. There's so much more clarity and it's much easier to understand. That's why we call it the new clear physics.'' 
 I never visited Caltech again.
