ManErg wrote:
And their life expectancy is way more than 25. Unless they come into contact with our diseases and the radioactive waste we dump in their backyard.
Post-Neolithic Revolution humans had the worst life expectancy (at ~20 years, which certainly validates my assertion that longing for the good old days before the Industrial Revolution is a bit silly), but hunter gatherer populations have a consistently abysmal life expectancy (~33 years in the good cases). Now, this is generally an expectancy "from birth", which may be throwing you off, but most of what I've heard says the expectancy is about ~33, and has been so in hunter-gatherer populations from the Upper Paleolithic. Granted, the expected lifespan of anyone who makes it to 15 will still be in the 50s, but what you're asserting is completely inconsistent with everything I've heard. I have Shripad D. Tuljapurkar,1* Cedric O. Puleston,1 and Michael D. Gurven2 citing Gurven M, Kaplan H. (Hunter-gatherer longevity: Cross-cultural perspectives. Popul. Dev. Rev. in press. 2007) as saying the life expectancy for a hunter gatherer is
33.5 years. I mean, I don't think this is exactly controversial here. Prior to the advances of the last hundred years, people died
a lot when they were young.
Any way you cut it, of course, in terms of longevity and overall health the absolute worst was pre-industrial neolithic techno level, but yeah...
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* here for the nachos.