David and Goliath

  1. That's why so many cultures around the world have a proverb to describe the difficulty of raising children in an atmosphere of wealth. In English, the saying is "Shirtsleeves to shirtsleeves in three generations." The Italian say, "from stars to stables". In Spain it's "he who doesn't have it, does it, and he who has it, misuses it". Wealth contains the seeds of its own destruction.
  2. A bat and a ball cost $1.10 in total. The bat costs $1.00 more than the ball. How much does the ball cost?
    The ball costs 5 cents
  3. If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?
    5 minutes.

    These puzzles are two of the three questions that make up the world's shortest intelligence test. It's called the Cognitive Reflection Test (CRT). It was invented by the Yale professor Shane Frederick, and it measures your ability to understand when something is more complex than it appears - to move past impulsive answers to deeper, analytic judgments.
Card Set
David and Goliath
Malcolm Gladwell