The Productivity Paradox Nobody Talks About Engineering teams in 2026 are writing more code than ever. AI coding assistants have made generation dramatically faster — output per engineer has jumped roughly 60% from 2025 to 2026 alone. But here's the uncomfortable part: many of these same teams are shipping at the same pace, or slower. The bottleneck moved. Most teams haven't noticed. Writing Got Fast. Review Didn't. For decades, writing code was the slowest step in the pipeline. A developer opened one or two PRs a day, and a teammate reviewed them over coffee. Review kept up easily because there simply wasn't much to review. AI changed the first step. A developer with AI tools can now produce five or six PRs a day. But a reviewer can still only handle the same number they always could. The pipeline is no longer balanced. As Armin Ronacher put it, if input grows faster than throughput, you have an accumulating failure. Backpressure and load shedding become the only options that keep the system functional.…