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Totally — git handles syncing files. The problem is these four files have different formats and conventions. Same project context, four dialects. That's why I wrote bi-sync --all: one YAML source, four native outputs.

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that's not my experience, LLMs are flexible enough, ln -s is sufficient

ln -s makes all four files identical. Whichever format you write it in, the other three get the wrong structure. This generates each in its native format.

show me good evals that it actually makes a difference

that is the opposite of what I see

ETH Zurich tested this: LLM-generated prose context = -3% performance, +20% cost. Even human-written = +4% at +19% cost. The problem is prose bloat. Structured formats avoid that by design. https://arxiv.org/abs/2602.11988

There is research that shows the opposite. A literature survey will show you something different than a single paper.

ETH Zurich studied 5,694 PRs across 12 diverse repos.

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