>Bear in mind that these are only preliminary estimates...
>The series come in three flavors. My "preferred" version; a version that
>rejects Michael Boskin and company's conclusions about how the invention of
>new goods and new types of goods have added to material wealth; and a
>series that abandons any attempt to track pre-1500 movements in income per
>capita and just assumes that pre-1500 per capita output was constant.
Where do these estimates come from, and how are they different from Maddison's latest (in Monitoring the World Economy, 1820-1992, published by the OECD)?