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?
The base/average salary comparison also makes a lot of sense.
The purchasing power of a typical weekly wage in 1800 or 1637 looks very different depending on whether you express it in terms of bread rolls, non-leather settees or bluetooth speakers (all of which are constituent parts of the modern UK CPI index)
Except that it's not fair to simply assume that a good salary was roughly similar in terms of purchasing power across the a few centuries. In fact at that time middle income people were much poorer in terms of what they were able to consume, purchase, and barter.
Now for the mystery of “the the” which I sometimes encounter...
Using that source, 78m Guilders would be 624m-1.4b Euro today.
The point that the Dutch were an economic superpower in the 17th century is not off base: they were only country to maintain colonies in North & South America, Africa and Asia.
The point that the Dutch East India Company was probably the first company set up under a system of modern financial capitalism, that is a permanently capitalized enterprise with a professional managerial class, separate from tradable claims on the profits of that enterprise, is also well taken.
But this article is a load of twaddle.