Re:No, You can't retire rich at 30 if you sell your startup
by jsnell on Monday August 23, 2010 @08:12PM
(#1628502)
Sounds like _A Farewell to Alms_ by Clark. Though as far as I can remember the data showed the "merchant class" crowding out the lower classes, not the nobility. Nobles only had about an average amount of surviving children while rich merchants had an above average one. Makes more sense that way: medieval nobility doesn't sound like a great base for middle-class values...
I'm not totally convinced about the theory, but the book was a surprisingly good read.
IIRC, the genealogical records (of most present-day Europeans and Americans being descended from the nobility) was presented as fact, but the causal link with the rise of the middle class was more tenuous.
I'll look again after I've gotten some actual work for $realjob done.