Let me explain

Simply put, there will be no explanation. That's right. Sometimes it's smart to just nod and smile and nod some more. Don't get me wrong. I'm not suggesting anything disingenuous. Smile only when it moves you, of course. Let it come naturally. Keep in mind, it's incredibly difficult to smile when doing the hard math, so wipe all numbers and inequalities off the blackboard. Instead picture a cat sleeping upside-down in the sun. Nod in admiration of the joy it finds in that otherwise unused corner. Yes, nod and a smile will come.