It does not know how to think about ERISA's myriad interlocking provisions
General AI answers from broad knowledge of ERISA, but it can miss the related issues a question touches, such as the testing failure that follows a deferral or match correction, and it is as confident about an issue it should have left aside as about the one that matters in your case.
What closes it: instructions on how to work through each ERISA question, and on what else to consider when one issue is raised, the way ERISA professionals approach the work.