Wasn't the cause of humor... oh wait, I was going to spoil the story. Here's a review (with spoilers): http://www.helium.com/items/1714669-jokester-by-isaac-asi

Wasn't the cause of humor... oh wait, I was going to spoil the story. Here's a review (with spoilers): http://www.helium.com/items/1714669-jokester-by-isaac-asimov http://www.helium.com/items/1714669-jokester-by-isaac-asimov