> when the life expectancy was 
>40
>years, that didn't mean that 40 year olds were really old people 
>expected to
>die soon, it meant that more babies died during childbirth or from 
>childhood
>illnesses thereby lowering the AVERAGE life expectency, not the actual 
>age
>of death from "natural causes". 
That claim is very much at odds with my understanding.  I'm  very
interested in hearing more.  What is the source of this information?
Take care.  -KMO
P.S.  There is new C material waiting to infect your brain.  You can find
it at
http://www.lucifer.com/~kmo/c-realm