If we were to believe the embodiment theory of intelligence (it’s by far not the only one out there, but very influential and convincing), this means that building an AGI is an equivalent problem to building an artificial human. Not a puppet, not a mock, not “sorta human”, but real, fully embodied human, down to gut bacterial biome, because according to the embodiment theory, this affects intelligence too.
In this formulation, it’s pretty much as impossible as time travel, really.
Sure, if we redefine "AGI" to mean "literally cloning a human biologically", then AGI suddenly is a very different problem (mainly one of ethics, since creating human clones, educating, brainwashing, and forcing them to respond to chat messages ala chatGPT has a couple ethical issues along the way).
I don't see how claiming that intelligence is multi-faceted makes AGI (the A is 'artificial' remember) impossible.
Even if _human_ intelligence requires eating yogurt for your gut biome, that doesn't preclude an artificial copy that's good enough.
Like, a dog is very intelligent, a dog can fetch and shake hands because of years of breeding, training, and maybe from having a certain gut biome. Boston Dynamics did not have to understand a single cell of the dog's stomach lining in order to make dog-robots perfectly capable of fetching and shaking hands.
I get that you're saying "yes, we've fully mapped the neurons of a fruit fly and can accurately simulate and predict how a fruit fly's brain's neurons will activate, and can create statistical analysis of fruit-fly behavior that lets us accurately predict their action for much cheaper even without the brain scan, but human brains are unique in a way where it is impossible to make any sort of simulation or prediction or facsimile that is 'good enough' because you also need to first take some bacteria from one of peter thiel's blood boys and shove it in the computer, and if we don't then we can't even begin to make a facsimile of intelligence". I just don't buy it.
“AGI” isn’t a thing and never will be. It fails even really basic scrutiny. The objective function of a human being is to keep its biological body alive and reproduce. There is no such similar objective on which a ML algorithm can be trained. It’s frankly a stupid idea propagated by people with no meaningful connection to the field and no idea what the fuck they’re talking about.
We will look back on this and the early OpenAI employees (who sold) will speak out in documentaries and movies in a decades time and they will admit that "AGI" was a period of easy dumb money.
In this formulation, it’s pretty much as impossible as time travel, really.