On 6/08/2014 05:56, corinnalackmann wrote:

> c) hunter/gatheres have to be lucky to pass the age of thirty

Last time I checked this was the life expectancy at birth. So, if you
made it to young adulthood you could expect to live to well past thirty.

Also, much the same applies to pre-industrial farmers, and city dwellers
were even worse off, cities being horribly unhealthy.