Yea I get that but my initial post was not technical in nature. Regardless of any GFCI shortcomings they still save lives and the numbers show it. They are not fool proof we know. We could give examples like fiberglass isolated tubs and a radio still killing people with GFCI. I wasn't finding loop holes. The GFCIs have stats that overwhelmingly support their implementation. AFCIs don't. Initially that could be discounted as low adoption numbers but after more than a decade with no noticeable change in numbers, something has got to be said. Thus my comment about comparing them to GFCIs. That's a good comparison, not from a technical application standpoint but from a regulatory standpoint. If AFCIs were saving lives at half the rate GFCIs are there would be less pushback. Instead nobody is sure, which says something by itself.