Dinosuars on Mad Men

I can't believe Mad Men is back this weekend. I was not happy at the end of last season, though I loved the season itself. Waiting for the premiere, I found myself thinking about a discussion I seemed to have constantly on message boards about that show during Season 4 that made me really sad, but people felt very strongly about it.

Basically, it dealt, for me, with how you deal with multi-generational characters in fiction, especially in a historical show. No spoilers, I don't think. ( There is no right age to act. )