exactly. The way I see it, as the average life span of a human increases the pace of life will slow to a more leisurely elven type speed. Things are a lot more complex and there is a great deal more to know than say a century or even half a century ago, it takes a bit longer now to come up to speed.
Yes, and I don't think it's easy for women to have children at 60 or 10, however it's still possible. Biologically it's probably optimal to have children in the 16 - 22, socially 25 - 35 is probably ideal. However, I was simply pointing out that the limits of biology are well outside the shift in optimal range we are talking about.