The Numbers Don't Lie The AI Engineering Report 2026 analyzed telemetry from 22,000 developers across more than 4,000 teams. The headline metrics look impressive: epics completed per developer are up 66%, task throughput is up 34%, and PR merge rates are climbing. But dig one layer deeper and the picture shifts dramatically. Median time in PR review is up 441%. Average time spent in code review is up nearly 200%. Pull request sizes have grown 51%. And 31% more PRs are merging with zero review — not by policy, but because reviewers can't keep pace with the volume. The report calls this pattern the "Acceleration Whiplash." The Bottleneck Has Moved For years, the constraint in software delivery was writing code. AI has largely removed that constraint. Developers are producing more code, faster, across more contexts than ever before. But the rest of the pipeline — review, testing, validation, incident response — was designed for human-paced output.…