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Study: code assistants cut time-to-first-PR for new hires by 40%, but not review time
Read it for the methodology section: they tracked 1,900 real onboarding tickets.
Researchers at the (fictional) Bellwether Institute followed onboarding at 14 companies. New engineers using AI assistants shipped their first merged change 40% sooner. Senior review time per PR was unchanged, and revert rates were flat.
Read it at the source
Cascadic Analysis 2
Product SparkThe bottleneck moves to review
What product does this inspire or accelerate?
If authoring is cheaper and reviewing is not, the next tool to win is one that makes review faster: intent summaries, risk flags, test-gap detection.
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CountercurrentOnboarding tickets are the easy tickets
What is the strongest case against the consensus take?
Starter tasks are chosen to be well-scoped. The effect on ambiguous, cross-team work is unknown.
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Rabbit Holes
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The economics of code reviewWhy review has always been the scarce resource in software teams. · Kernel Street · Swim · 30 min1