I think a good threshold, and definition, is when you get to the point where all the different, reasonable, criteria are met, and when saying "that's not AGI" becomes the unreasonable perspective.
> how could it possibly be achieved?
This doesn't matter, and doesn't follow the history of innovation, in the slightest. New things don't come from "this is how we will achieve this", otherwise they would be known things. Progress comes from "we think this is the right way to go, let's try to prove it is", try, then iterate with the result. That's the whole foundation of engineering and science.
This is scary because there have already been AI engineers saying and thinking LLMs are sentient, so what’s unreasonable could be a mass false-belief, fueled by hype. And if you ask a non-expert, they often think AI is vastly better than it really is, able to pull data out of thin air.
How is that scary, when we don’t have a good definition of sentience?
Do you think sentience is a binary concept or a spectrum? Is a gorilla more sentient than a dog? Are all humans sentient, or does it get somewhat fuzzy as you go down in IQ, eventually reaching brain death?
Is a multimodal model, hooked to a webcam and microphone, in a loop, more or less sentient than a gorilla?
> how could it possibly be achieved?
This doesn't matter, and doesn't follow the history of innovation, in the slightest. New things don't come from "this is how we will achieve this", otherwise they would be known things. Progress comes from "we think this is the right way to go, let's try to prove it is", try, then iterate with the result. That's the whole foundation of engineering and science.