Wittgenstein's Poker

Remember that book I referenced in class this week about the one philosopher, Ludwig Wittgenstein, who threatened another, Karl Popper, with a poker?

• It's called Wittgenstein's Poker: The Story of a Ten-Minute Argument Between Two Great Philosophers.   
• If a book is a bit too long for you, there's also this short article on the incident.  
• Or if you're looking for even more, there's a second book by someone who was in the room at the time of the incident.