Noteworthy: GitHub Copilot Research Finds 'Downward Pressure on Code Quality'

“We find disconcerting trends for maintainability. Code churn – the percentage of lines that are reverted or updated less than two weeks after being authored – is projected to double in 2024 compared to its 2021, pre-AI baseline. We further find that the percentage of ‘added code’ and ‘copy/pasted code’ is increasing in proportion to ‘updated,’ ‘deleted,’ and ‘moved ‘code. In this regard, AI-generated code resembles an itinerant contributor, prone to violate the DRY-ness [don’t repeat yourself] of the repos visited.”

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