1. There should be an infinite number of Martys coming back to the future from 1955.
2. Doc should already know he is going to die from the beginning.
3. Marty is technically named after himself.
4. Marty wrote Johnny B. Goode.
Marty played the Chuck Berry song in 1955 before Chuck Berry wrote it himself. Therefore, Chuck Berry plagiarized Marty’s work which was actually Chuck Berry's. Marvin Berry calls Chuck to tell him of the sound he is looking for.