"We differ in that respect. I was able to see just one line, where it led to, what would build it up. Who would play a role."

He's realizing he never really tried to see any other prophecy once he had the one. Did it even work that way? At the time, would he have cared?

He took it to find his son. Why would he look elsewhere?

"Crossing to worlds with magic was something I had a good deal of experience in already. Jumpers, like I said. Pays to know at least one. But once beans went extinct, only an especially powerful curse would open the way to a World Without Magic."