From where, though? Every country with high tier people has below replacement fertility. So, without strict selection, immigration is just a another net negative on top of the population aging issue.https://twitter.com/reason/status/938117777927184384 …
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Replying to @KirkegaardEmil
How do you quantify the net negative of immigration?
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Replying to @mom0_o
Add up their contributions, subtract their costs. For values that cannot be traced to individuals, spread the contribution/cost. https://papers.ssrn.com/abstract=2564977 …
7:27 AM - 6 Dec 2017
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