Maybe rock and roll was inevitable, with or without Chuck Berry. But the fact remains that he was the one who advanced the state of the art.
The drive to integrate different influences in one's life and take them in a new direction; that's what Chuck Berry and others like him had.
How do we select a "final" version of a work? Do we even need to?
Keep learning, keep trying, keep experimenting
Sometimes we have to forge our own path
"What is a song, exactly? It's something that starts as an idea and becomes more than that."
Patience and a long view will pay off