"I predict we will surpass paperback sales sometime in the next nine to 12 months. Sometime after that, we'll surpass the combination of paperback and hardcover. It stuns me. People forget that Kindle is only 33 months old."
On the one hand, he has the data. On the other hand, he presumably has some financial incentives as well. I guess we'll find out if that estimate is right in...about nine to 12 months.