[rdl]

Child pornography doesn't have a bright line, though. I don't think 16/18/21 are particularly different (I.e. societies could choose any of those). There still seems to be debate around the edges of simulated, simulated using real photos of non sexual underage people, self pics to other minors, etc. And IMO the bigger issue of knowing possession vs. it being totally radioactive.

[gizmo686]

>There still seems to be debate around the edges of simulated

Not just the edges. I've seen porn sites self censor obvious fictional porn depicting children, because of concern over hosting child porn.

[rdl]

The thing where Australia banned porn with smaller (A/B) breasted adult women because it "contributed to pedophilia" was amazing, too.