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Revund Blog
Engineering notes, product decisions, and what we're learning about AI code review.
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The mirror problem: why a model can't review another model's code
A reviewer drawn from the same training distribution as the author shares the author's blind spots. Recent research calls this correlated failure, and it's the architectural reason a code-review tool needs an external reference, not a smarter prompt.
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The 14% gap: why every code-review finding needs a rationale
Bacchelli & Bird showed reviewers think they're hunting bugs but mostly write nits. The deeper finding, and the one Revund's architecture is built around, is that a comment without a falsifiable rationale is indistinguishable from noise, even when it's right.
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The 200-line cliff: what 50 years of code review research actually says
Reviewer defect-detection drops off a cliff past ~200 lines of changed code. The research is older than most engineers in the industry. We unpacked the studies, the methodologies, and what they imply for AI code review.
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4 postsThe mirror problem: why a model can't review another model's code
A reviewer drawn from the same training distribution as the author shares the author's blind spots. Recent research calls this correlated failure, and it's the architectural reason a code-review tool needs an external reference, not a smarter prompt.
The 14% gap: why every code-review finding needs a rationale
Bacchelli & Bird showed reviewers think they're hunting bugs but mostly write nits. The deeper finding, and the one Revund's architecture is built around, is that a comment without a falsifiable rationale is indistinguishable from noise, even when it's right.
The 200-line cliff: what 50 years of code review research actually says
Reviewer defect-detection drops off a cliff past ~200 lines of changed code. The research is older than most engineers in the industry. We unpacked the studies, the methodologies, and what they imply for AI code review.
Hello, Revund
Why we're building Revund, what AI code review gets wrong today, and the bar we're trying to clear before we ship a single finding to a real PR.