Case (
case) wrote in
fandomsecrets2015-06-03 06:35 pm
[ SECRET POST #3073 ]
⌈ Secret Post #3073 ⌋
Warning: Some secrets are NOT worksafe and may contain SPOILERS.
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[Master Chef]
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[The Raven Cycle by Maggie Stiefvater]
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[Harry Potter]
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[Star Wars]
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[Frank]
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[Discworld]
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[Baccano!]
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[Cher Lloyd/Kingsman: The Secret Service]
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[Eurovision]
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[Hannah Rutherford (Yogscast)]
Notes:
Secrets Left to Post: 02 pages, 032 secrets from Secret Submission Post #439.
Secrets Not Posted: [ 0 - broken links ], [ 0 - not!secrets ], [ 0 - not!fandom ], [ 0 - too big ], [ 1 - repeat ].
Current Secret Submissions Post: here.
Suggestions, comments, and concerns should go here.

Thinking more about this:
If there's no genetic advantage to being a pureblood, eventually the 'purebloods' will be the 'somewhat purer-bloods,' as more 'less pure blood' percolates through. This happens to real-world human populations too.
But if there is a genetic advantage, or even a strong social advantage, to being a pureblood, then purebloods will tend to marry purebloods for that reason.
And human beings are capable of reproducing far above replacement rate, come to that.
Surely JKR was modelling the purebloods on aristocratic populations that marry other aristocrats for various reasons, or wealthy sorts who marry other wealthy sorts to keep the money in the family. It's a recognisable phenomenon. I suppose if you're trying to make sure all your children inherit magic powers, you have even more incentive to marry within proven magic-user bloodlines.