Judging by the only number stated - 500-to-1000-years - and considering the lifetime of 22-olds is about 22... about 20-40 times? Of course assuming the same de

Judging by the only number stated - 500-to-1000-years - and considering the lifetime of 22-olds is about 22... about 20-40 times? Of course assuming the same degree of breakdown...