You couldn't ever teach general relativity to your dog. It seems absurd to me to think that there is no theory about the world which is unteachable to humans. W

You couldn't ever teach general relativity to your dog. It seems absurd to me to think that there is no theory about the world which is unteachable to humans. We're not that different from dogs in the long run. Perhaps phrased in a more rigorous way, the universe is a spectacularly huge and complex system, and a single human brain is a positively tiny piece of that system, which is very much a part of the system and not external to it. So the question really becomes something like this: to what extent can a tiny little piece of a huge system contain within it a fully functional model of the entire system, which inevitably means it contains a model of itself?