As much as the AI hating squad doesnt want to admit... but LLMs are good at associating information the dense matrix was trained on. Now, LLM companies and such basically grab everything they can. Its probably upwards of a few exabytes of data ingested.
Now, within that sea of information and references and links.... real humans have solved problems. The problems may be in their own domain with their own language. BUT a tool that can probabilisticly compare across all fields of knowledge can show orthogonal ways to advance.
Now, these LLMs are NOT making new knowledge. But they excel at connecting the bulk of humanity's writings. And many of the problems we have is of association and connection.
Your initial comment of "quantum leap in energy production" is interesting. The **idea** is that it's already solved, kinda. Probably on paper, and/or already ingested into LLMs. But nobody's put all the pieces together in that exact "best way". BUT that LLM can potentially do it.
As an aside, I think both the techbros and the ai haters are both grossly wrong. These things do have utility (unlike the haters' comments), but are wayyyyyy oversold as to their capacities and inherent uncorrectable errors (techbros).