@Gargron And let me guess...your definition of "intelligence" specifically excludes what people are calling AI. But here's the thing...there is nothing called "intelligence." Find out what the independent-variables are that are relevant to the behavior we _call_ "intelligent" - even in nonhumans. And, actually, after the era of GOFAI ended, they did...sort of. AI people have ignored the natural science of behavior and it has hurt their efforts for AGI. Think "conditioning," people. Sheesh!