Just how hard is it to create a brain? Nature provides us with virtually uncountable examples of working brain hardware that enable animals to live productive lives.

In this paper, we start with what it means to be sentient and how the effect arises in natural brains, and then explore how it will arise in synthetic brains, and how synthetic sentience may be deployed in applications. Finally, we will make some predictions about how the world will change as a result.

Google's Gemini (itself an LLM) discusses the LLM vs real-time synthetic brain simulation approaches to AGI.

Despite its impressive output, generative AI doesn't have a coherent understanding of the world, say researchers at MIT.