It's more than fuzzy, they are packing exabytes, perhaps zetabytes of training data into a few terabytes. Without any reasoning ability it must be divine intervention that they ever get anything right...
It is divine intervention if you believe human minds are the product of a divine creator. Most of the attribution of miraculous reasoning ability on the part of LLMs I would attribute to pareidolia on the part of their human evaluators. I don’t think we’re much closer at all to having an AI which can replace an average minimum wage full-time worker, who will work largely unsupervised but ask their manager for help when needed, without screwing anything up.
We have LLMs that can produce copious text but cannot stop themselves from attempting to solve a problem they have no idea how to solve and making a mess of things as a result. This puts an LLM on the level of an overly enthusiastic toddler at best.
LLMs are trained with hundreds of terabytes of data to a few petabyte at most. You are off by 3 to 6 orders of magnitude in your estimate of training data. They aren't literally trained on "all the data of the internet". That would be a divergent nightmare. Catastrophic forgetting is still a problem with neural networks and ML algorithms in general. Humans are probably trained on less than half an exabyte of data given the ~1Gbps of sensory data we receive in a lifetime. That's still ~20 petabytes of data by age 5. A 400B parameter LLM with 100 examples per parameter would equal about 640 TB (F16 parameters) of training data. That's the order of magnitude of current models.
We have LLMs that can produce copious text but cannot stop themselves from attempting to solve a problem they have no idea how to solve and making a mess of things as a result. This puts an LLM on the level of an overly enthusiastic toddler at best.