How do you tell an introverted computer scientist from an extroverted computer scientist? An extroverted computer scientist looks at YOUR shoes when he talks t

How do you tell an introverted computer scientist from an extroverted computer scientist? An extroverted computer scientist looks at YOUR shoes when he talks to you. --- Why do programmers always mix up Halloween and Christmas? Because Oct 31 == Dec 25! --- How many programmers does it take to change a light bulb? None, that's a hardware problem