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Thanks for this information. It helps bring me up to date on a subject I have long thought about.

When I first read Lawrence Wright's book _Twins_ many years ago, I was astonished. Obviously, the undeniable likeness of adopted twins raised apart was mind-blowing, but what really got me was that the twins raised apart and unaware of each others' existence actually grew MORE SIMILAR as they got older.

And yet the media, and even academia, and the public seem to still believe that we are mostly blank slates, and products or our environment, and government programs can correct all societal problems. Why is that, I wonder.

(BTW I recommend political science professor John Hibbing's 2013 book about the inheritance of the Left-Right political difference book _Predisposed: Liberals, Conservatives, and the Biology of Political Differences_)

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