I keep noticing this, and then keep reminding myself that it's cliche for seniors like me to see adults as kids. But then I watch, say, an episode of Dragnet, and the feeling comes back. Jack Webb was 35 in 1955, in that show's prime. He looks normal for the times, but so much older, or perhaps mature is a better word, than a modern 35 year old. Multiply this observation by a large number of cases.<p>You could test the theory with photos of class graduations and reunions for various years, with faces extracted, normalized and pasted into a standard setting. I'd bet it's real.