A nation-leading design? You bet.Even Labor's intervention to stop paid parking at Tea Tree Plaza shopping centre — an issue that would struggle to register beyond Adelaide's north-eastern suburbs, let alone the country — copped the "nation-leading" treatment.Lest anyone think the term was becoming devalued, Premier Peter Malinauskas announced a genuine national first on Monday.SA's royal commission into artificial intelligence will be the biggest Australian public inquiry yet into the policy problems posed by AI.Its terms of reference are yet to be drafted, but it's expected to examine the impact of AI on education, skills, work, health and infrastructure — almost everything except data centres (SA's already got a "nation leading strategy" for those).Mr Malinauskas made the announcement shortly after a business trip to the United States where "70 per cent" of his meetings were about the emerging technology This included discussions with the leaders of Anthropic, OpenAI and Apple.Speaking to journalists on Tuesday, Mr Malinauskas said: "Maybe I've got the bug, I don't know, but once you really start reading about AI and getting into the depths of what this is going to mean, you can't help but feel a weight of responsibility to do something about it."But the SA royal commission has critics, as well as questions about its utility.Those questions are less about whether it warrants the nation-leading title, but more around why is South Australia leading