Some of Bob's old style (60's) metaphors and similies in those lyrics.

The title is obviously a reference to his "Times They Are a Changing"

A few thoughts:
"A worried man" - (takes a worried man to sing a worried song)
"Standing on the gallows with my head in a noose (Hangman, slack your rope for a while)
"Forty miles of bad road" (Forty Miles Forty Miles
Mrs. Lucy (Lucille Ball) (Mr. Jinx = ??? Jinx Davis)
"Only Passin Through" (gospel song This world is not my home, I'm only passing through)
"Putting her in a wheelbarrow" (Molly Malone

Having been written for a film, there are probably allusions to characters within the script. However, the refrain is the standard of centuries of musicians who have lost touch with passion of their youth and are disconnected with the world today.