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Age of earliest stone hand axe (2.6 million y) is 400 x Age of the earliest city (6,500 y)
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Price of an Airbus A380 airliner (2015) ($428million)
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.