Being a specialist requires you to perform in the top 1 percent (for example) of just one discipline. A polymath will perform in, say, the top 25 percent of three disciplines or more. And here you see the first main advantage: being a polymath is actually easier, from this point of view. You can more quickly find yourself in the top 25 percent than in the 1 percent. How do you do this? Well, you “stand on the shoulders of giants.” You needn’t invent the wheel anew each time. Part of a polymath’s invaluable skillset is knowing how to quickly find and synthesize the highest quality information. This concept known as skill stacking is central to a later chapter in this book.