Geek, design and math jokes

Let’s share some anecdotes that pretty much nobody beside us understands :

• Q: What is the difference between a Ph.D. in mathematics and a large pizza?
  A: A large pizza can feed a family of four…
  
  
• Theorem. A cat has nine tails.
  Proof. No cat has eight tails. Since one cat has one more tail than no cat, it must have nine tails.
  
  
• A Ph.D. in math giving a lecture: “Let’s take k numbers… no, k is too few… let’s take n numbers!
  
  
• A mathematician is asked by a friend who is a devout Christian: “Do you believe in one God?” He answers: “Yes – up to isomorphism.”
  
  
• “Math problems? Call 1-800-[(10x)(13i)2]-[sin(xy)/2.362x].”
  
  
• A logician at Safeway.
  “Paper or plastic?”
  “Not ‘not paper and not plastic’!”
  
  
• There are 10 kinds of mathematicians: those who can think binarily and those who can’t.
  
  
• The shortest math joke ever: let epsilon < 0
  
  

Sources: 1, 2.

This is a joke. Apparently a 51 year old IT Director thinks there are five 20p pieces in £1.60.