For a graphical grasp of this concept, take a bell curve, and then plot only the top 0.1% of the bell curve. That's the distribution of abilities among people

For a graphical grasp of this concept, take a bell curve, and then plot only the top 0.1% of the bell curve. That's the distribution of abilities among people who are any good at all at chess, and it is no longer anything close to a bell curve.