It's especially an issue with type-ahead tools that hallucinate function names or introduce subtle bugs: you lose time and get bumped out of the flow as you evaluate the AI's proposal. (Or fix it, if you were unfortunate enough to accidentally hit tab while indenting a line and the AI slipped in a change.)

The agentic tools do better but don't yet have enough context to know that making this change _here_ will break that thing over _there_, so they require a lot of management, which seems to engage a part of the brain than coding.