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Gorillas have apparently never asked a question. They've learned sign language, so this is an interesting distinction. If they had the desire or ability to ask questions, presumably they'd have done so. https://medium.com/@bleistern/why-dont-apes-ask-questions-9f...

I'd be interested to know the original sources and the rigor of the tests, though.

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Interesting.

>They can’t conceptualize that there could exist a mind of thoughts and feelings outside their own.

Presumably they don't have a concept of their own mind either. And this is despite being quite sophisticated and hosting a bunch of memes related to things like tool-use:

https://link.springer.com/article/10.1007%2Fs10071-011-0403-...

Whereas primitive humans painted pictures of themselves on cave walls. Which seems like an early attempt to explain themselves to themselves.

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