Thanks! That is disheartening, however the spirit of the talk is still inspiring and this HN post reinforces the idea. The motivational part is after all a bit

Thanks! That is disheartening, however the spirit of the talk is still inspiring and this HN post reinforces the idea. The motivational part is after all a bit orthogonal to the intelligence claim. So the answer to the question "could we teach crows to do this?" might instead be "absolutely, however wild crows choose not to participate". Which is quite different depending on which viewpoint you have. The other anecdotes from that talk are still valid and equally fascinating. Can't recommend that talk any more though, at least not without preceding it with the information you linked...