I believe doctrbill has recently covered this. I checked his most recent messages list, but was unable to find the message. Perhaps it was someone else.
Anyhow, I believe the content of this unfound message was along the lines of Asgara's message. The added detail was that the zero point for the ages was that of puberty. This solved the problem of the person having had children at an improbable early age.
Still, the matter does deserve its own topic.
Moose