It's been my experience that slackers are often demoralized visionaries. When you tell someone that they have nothing to add for long enough, eventually they start believing it.
Sadly though, all the potential in the world doesn't matter if you don't apply yourself. I'm currently on a team of
slackers and stuck projects, and moving to silicon valley in the next 30 days (already have a job there.)
I fully expect the next few years to be my most productive ever, because I'm coming into a team that makes me feel like a total novice in the best way possible. They're very nice and willing to share their knowledge while we hone our craft together. I can't wait.
Anyone in mountain view up for some road biking and learning how to kiteboard in the next few months? I also climb, but I'm a bit rusty/heavy.
Then there's the guy I knew in college who spent hours of every day playing Runescape and who once told me that his math teacher had said to him: "You are the smartest student I have ever had fail this class."