He hoped that the easy, conversational, approach and the connection with unusual behaviours, and some fantastic images would excite his secondary school boy.
He also hoped the introduction to Python would ease the path into computer literacy, addressing a fear of the "technical stuff that happens under the hood". I found this suprising because most boys, including this one, were avid computer and games console users - but upon reflection that is different from playing with programming and electronics, and ultimately computational thought.
I wish him well and I hope others will too! The summer holidays are an ideal time to play with mathematics and computer programming in a fun recreational way, and not have the pressure of any teacher marking your work!