Understanding Is the New Bottleneck: What AI Speed Means for PMs

When AI can write code faster than humans can understand it, the bottleneck shifts from execution to comprehension — and that changes what product teams need to optimize for. Geoffrey Litt named it cleanly today, and LangChain just published data showing coding agent costs are spiraling in ways most teams aren't tracking. Both signals point to the same underlying problem: speed without understanding creates new kinds of debt.