Learning Porosity      

A lecturer walks into the lecture room one morning.

As he walks about the class, he spots Andrew who has his ears stuffed with cotton wool.

“Andrew!” the lecturer calls him.

Andrew: “Yes sir, good morning sir.”

Lecturer: “Hope you are alright, what is wrong?”

Andrew: ” Nothing sir, I’m hale and hearty.

Teacher: “Why stuff your ears with cotton wool?

Andrew: “Sir I’m trying to block my ears so that what you’ll teach us today will not escape them. I’m being a gatekeeper against learning porosity.”