Some cultures have four-part scripts, some three -- not all two. I once read a book about Ulyssean aging, IIRC. It described persons such as Thor Hyerdal who i

Some cultures have four-part scripts, some three -- not all two. I once read a book about Ulyssean aging, IIRC. It described persons such as Thor Hyerdal who in essence started new lives (full of recognized accomplishment) near age 60.