count the times you took anti-biotics, cut yourself deep enough or needed surgery (from bad teeth to things like an appendectomy) - if anything of those applies, you would very likely have died in the good old days.<p>my eye sight requires contact lenses, without i cannot survive.<p>there is a reason earth only had a minimal population at that time. the current billions of people are only possible through the modern marvels of medicine, agriculture, etc.