While we talk about the boom as encompassing 1946 to 1964, demographers note that it really began mid-1946 and ended mid-1964. Harris, born in Oct 1964, can therefore fairly be described as Gen X.
Well, "the boom" isn't the same as the generational identifier! So saying "1964 equals Baby Boom" is right in the vernacular. She just wasn't born in the actual boom after which the generation is named.
I was just trying to help you save face / share a factoid.
A difference of a few months is exactly the sort of semantic argument that my Silent Generation father would have loved. It would have turned into at least an hour long conversation at some holiday gathering.
Your book may cover this but, demographers notwithstanding, it’s hard to consider anyone who was still a teenager when MTV existed a Baby Boomer. Culturally, the children of ‘61-‘64 were the advance guard of Gen-X.