&quot;Listen, I don&#x27;t know why you do it, but if you keep ramming your head into the wall like that, you can hurt your brain quite badly.&quot;<p>&quot;Hah, what do you know, scientist?  You already admitted you don&#x27;t know how the brain works!&quot;<p>&quot;Oh, you&#x27;re damn right, what was I thinking?  Please carry on.&quot;