As it has been established that aiming for the dead center of a desired demographic is the best way to gain listeners to the whole and that most people's musical influence is from age 16-22, I am curious as to why much of the music extends to before the musically influential years of the target's center. Under this scenario, a 25-54 station would have its center's influential years fall between 1993 and 1999. Clearly, this is not the focus of most stations, if any. If the center of the demo is truly the target then why play anything before about 1987 on these stations?