The mystery of Bob Dylan's motorcycle crash.

It happened a long time ago, and it's now written up as history. Since he was not very seriously injured -- no ambulance was called to the scene -- why did his music change so much? And aren't you still sad that the brilliant run from "Bringing It All Back Home" to "Highway 61 Revisited" to "Blonde on Blonde" came to an end? Or should you be happy, on the theory that he would have died if he'd kept up like that?