The only wishful thinking here is assuming people
won't lie about their age and then you end up with "children" competing in school-level competitions
> may erupt as early as 16, as late as 25
Cool so assuming the average age to be 20.5 this means someone with wisdom teeth is more likely to be of age than not.
Put this fact together with other factors like wrist x-ray estimation and obviously looking like an adult and maybe we can have some common sense