Turns out that Galileo was right and Aristotle was wrong: in a vacuum, a feather and a bowling ball will fall from a tall building at exactly the same speed. This is not to say that Aristotle wasn’t a brilliant thinker; empirical evidence shows he just had a wrong intuition. Even the most powerful intuitions we have can be misleading. Why is it, then, that many philosophers treat them as crucial when arguing for a conclusion? Can intuitions lead us to important truths about the world, or do they merely teach us about ourselves?