It did quite well! I appended the transcript to the previously shared Google Doc. The Flash model "cheats" a bit by relying more on Google Search results, but the Pro model did a very good job of breaking down the solution into considering primordial helium and ongoing fusion-produced helium.
Here's a Google Doc containing a transcript of the Gemini 2.5 Flash conversation, complete with the internal "thinking" steps enclosed in <think></think>. docs.google.com/document/d/1...
It's worth retrying with the "reasoning" models. I haven't paid for the advanced OpenAI models, but I tried with Gemini 2.5 Flash and 2.5 Pro and both got it right on the first time and on two subsequent prompts to reevaluate. These latest reasoning models are much better at resisting hallucination!
There is also an OCaml-based FUSE file system for Google Drive, which does not mirror the entire Drive to local disk. I don’t know if it works on macOS. github.com/astrada/goog...
I believe the official Google Drive desktop client for macOS already supports “streaming” files rather than mirroring, so you just need to select the option upon installing. support.google.com/drive/answer...
