Three age groups.

There are many ways to think about life as a whole.  

Think about the way the stretch of the duration of a person's life can be split into stages, or you can say it's the way the mass of all people can be seen as being in large groupings by age.  

Here is a simple grouping for our times.  

Three groups:  

aged UNDER 30 

aged 30-60

aged OVER 60 

(Comment: Which class are you in? ) 

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