The Importance of Progress

The key thing is you can be pretty close to the top of your game, but if you're not getting better, you don't like it. The problem is then you're over the hill. That's the bad news. There's a second intelligence curve that comes in behind it and you stay high in your 70s and 80s and 90s if you've got your marbles. It does not require working memory. What it requires is pattern recognition and good judgment and tons of wisdom.