Well, that's why I wanted to know how intelligence was operationalized. But even in your Gedankenexperiment, there are ways to estimate heritability of intellig

Well, that's why I wanted to know how intelligence was operationalized. But even in your Gedankenexperiment, there are ways to estimate heritability of intelligence: you'd need 100s similar cases, and, e.g., test them on puzzle solving and learning skills. Edit: sorry, I asked that question in another thread...