By contrast, an inflation calculator tells me that $100 one hundred years ago is worth around $2,500 now (so 25X). And according to this article https://www.jstor.org/stable/1820827?seq=1#metadata_info_tab... , a pretty typical wage back then was $0.50 per hour. 25X that is $12.50, which sounds about right as a typical median wage nowadays (perhaps a bit low; there is a real increase in standard of living over this time period too). So the inflation figures going back at least a hundred years do make sense. What causes them to break down when you try to go back much farther, then? Are the inflation figures simply wrong? Are there compounding errors that, over enough time, make the result completely ridiculous?