The implication of ICL being implicit BI is that the model is locating concepts it already learned in its training data, so ICL is not a new form of learning that has not been seen before.
I’m not sure I follow this. Are you saying that, if ICL is BI, then a model could not learn a fundamentally new concept in context? Can some of the hypotheses not be unknown — e.g., the model’s no-context priors are that it’s doing wikipedia prediction (50%), chat bot roleplay (40%), or some unknown role (10%). And ICL seems like it could increase the weight on the unknown role. Meanwhile, actually figuring out how to do a good job in the previously-unknown role would require piecing together other knowledge the model has — and sufficiently strong building blocks would allow a lot of learning of new concepts.
Yeah, I think we should expect much more powerful open source AIs than we have now. I’ve been working on a blog post about this, maybe I’ll get it out soon. Here are what seem like the dominant arguments to me:
Scaling curves show strongly diminishing returns to $ spend: A $100m model might not be that far behind a $1b model, performance wise.
There are numerous (maybe 7) actors in the open source world who are at least moderately competent and want to open source powerful models. There is a niche in the market for powerful open source models, and they hurt your closed-source competitors.
I expect there is still tons of low-hanging fruit available in LLM capabilities land. You could call this “algorithmic progress” if you want. This will decrease the compute cost necessary to get a given level of performance, thus raising the AI capability level accessible to less-resourced open-source AI projects.