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Time since the birth of Marco Polo (766 y) is 5 x Time since the publication of Volume 1 of Marx's Das Kapital (153 y)
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Highest price for a da Vinci painting sold at auction ($460million)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.