A cognitive advantage is something you can’t change. It’s either there or it isn’t. But increasingly, a different form of advantage is gaining prominence. It can’t give a boost to your intellectual capacity (because nothing can) but its lack it can wipe out much of your cognitive advantage.
What’s good about this newly rare form of advantage is that you are completely in control of it. I’m talking, of course, about the capacity to concentrate. Deep, sustained concentration on an intellectual task over several hours is very easily unlearned. But can you regain it and how to do it?