Flag Content?

There's seems to be a perception that PBS programs are mostly aimed at people either in the early stage of their lives(Sesame Street, Word Girl, Fetch) or the later stages of their lives (The War, Masterpiece). I think PBS provides outstanding content for these two demographics. And I understand PBS and its affiliate stations have to engage the crowd that provides the most monetary support for the cause(older). But I wonder if PBS is looking to engage Boomers and Gen Xers and widen the viewing audience anytime soon to cultivate the next wave of PBS supporters and advocates. Does PBS view shows like CARRIER and Frontier House as successes in reaching those demos? Can PBS sustain support while providing programming in primetime for 30-40 year olds?