@cherold We've both deleted our but I think you're missing a term in your algebraic expression. Let's try it as a story problem:
"Ed really likes a song that came out in 1982. What year was Ed born?"
Aa you see, unresolvable. I associate that particular song with people who'd have been somewhere between 15 and 35 or so in 1982, most of whose birthdates fall well inside the baby-boom period of 1946-64
@cherold (the age range is an idiosyncratic choice of my own, of course. 15 is about the earliest age with which I feel much connection to the popular music of the time, and 35 is about the point when I largely stopped feeling much one. Your mileage may vary. Not all stocks go up: some go down. Ask your doctor if highly subjective pop culture generalizations are right for you.)
