The 400-Line Attention Limit
Apply size and time limits to preserve review quality.
Review fatigue turns deep review into surface scanning. Review speed is a team throughput issue, not a politeness issue. When feedback arrives days later, the author has swapped context, the branch has drifted, and the reviewer is tempted to batch many comments into one painful round. Fast first response changes the economics: small corrections happen while the code is warm, and major concerns surface before the author builds more on top of a shaky premise. Speed does not mean shallow review; it means scheduling focused review windows and declining or rerouting work you cannot review in time. Size affects defect…
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