None:
The (tangential) Free-Range issue here is this: Why are we increasingly subject to rules and regs that have nothing to do with REAL safety and everything to do with litigation, worst-case-scenario-fantasizing and good ol’ CYA? It’s a time, money and morale-waster, with the added benefit of turning competent people into incompetent cowards. Just like so many rules and regs are implementing with kids: No, children, you CANNOT ride your bikes to school. No, children, you CANNOT do your own chemistry experiments. No, children, you CANNOT babysit/whittle/get a paper route/smile at a stranger. It is all TOO DANGEROUS.
And someday we will wonder why no one in the world (except, perhaps, electricians) can do anything.
H/T to Walter Olson.