please read this and correct others accordingly

it is well known that the average life expectancy for people in the industrialized world has increased significantly in the modern technological age.  people born into today's world will live, according to estimates, sixty plus years.  this average rises to around eighty in industrialized nations with good medicine and lots of money.  we also know, based on reams of historical data, that this average was closer to 35 as recently as one hundred years ago.
people seem to think, therefore, that almost everyone died before they'd even reached what we consider to be middle age.  this idea that people died at a younger age as a rule is utterly wrong.  the main reason for the huge rise in life expectancy is a corresponding drop in infant and juvenile mortality rates.  even in abe lincoln's day making it through puberty increased someone's life expectancy two or threefold.
think about it.  in the nineteenth century a typical family had more than three times as many kids as a modern one.  many of these kids did not reach adulthood.  for every kid who reached seventy you had one or more who didn't make it past ten with many of those kids not making it to three.  the average life expectancy between two people who died at seventy and someone who died at one is only forty-seven. a single outlier drastically alters the results and, when not accounted for or understood, leads to a lot of problems.
all i am asking is that people would think about what they say, write, or believe before they express it.  this is just a prominent example out of many, many others where a failure to think beyond the surface level causes a lot of stupidity.