But if we've already fed them all the data, and we don't have AGI (which we manifestly don't), then there's no way to get to AGI with LLMs and the tech/VC industry is about to have a massive, massive problem justifying all this investment.
Even when written down, without the ability to interact with and probe the world like you did growing up it's not possible to meaningfully tell the difference between 9/11 hoaxers and everyone else save for how frequent the relative texts appear. They don't have the ability to meaningfully challenge their world model, and that makes the current breadth of written content even less useful than it might otherwise appear.
We probably don’t have most of the Arabic corpus either — and barely any Sanskrit. Classical Chinese is probably also lacking — only about 1% of it is translated to English.
Marsilio Ficino was hired by the Medici to translate Plato and other classical Greek works into Latin. He directly taught DaVinci, Raphael, Michelangelo, Toscanelli, etc. I mean to say that his ideas and perspectives helped spark the renaissance.
Insofar as we hope for an AI renaissance and not an AI apocalypse, it might benefit us to have the actual renaissance in the training data.
If you make a cursory search you can also find other translations of his works, various biographies, and a wide range of commentary and criticism by later authors.
Many of Ficino's originals are also in the corpus of scanned and OCRed or recently republished texts. I'm sure there are archives here or there with additional materials which have not been digitized, but it seems questionable whether those would make any significant difference to a process as indiscriminate and automatic as LLM training.
And he is one of the most central figures of the renaissance. Less than 20% of neolatin has been digitized, let alone translated.
It is fine to question whether including neolatin, Arabic or Sanskrit in AI training will make AI better.
But for me, it is a core set of humanism that would be a shame to neglect.
So now, in order to progress further, we either have to improve the methods, or synthetically generate more training data, or both.
As you suggest, this costs lots of time and compute. But it's produced breakthroughs in the past (see AlphaGo Zero self-play) and is now supposedly a standard part of model post-training at the big labs.
Advances in architecture and training protocols can and will easily dwarf "more data". I think that is quite obvious from the fact that humans learn to be quite intelligent using only a fraction of the data available to current LLMs. Our advantage is a very good pre-baked model, and feedback-based training.