Logic Drift: The Failure Mode Agents Can't See (opens in new tab)

Vibe coding works for the first week or two. You describe what you want, the agent writes it, tests pass, you ship. A few weeks in, progress falls off a cliff. New prompts start breaking older features in ways that pass the obvious tests, but later surface in production. Vibe coding is the version where you fully trust the agent, don't read or only skim the code, and ship. Agentic coding is the version where you still read every diff, but the line between the two is a convention that decays w...