Earlier quoted context omitted.
You can't just 'waive' criminal responsebility - if I have a dangerous dog or industrial machinery that chops off hands, it doesn't matter what piece of paper the kid or the legal guardians sign, If I purposefully let kids play with them, I have put kdis in harms way.
> industrial machinery that chops off hands In the US South there's a ton of poultry workers that have lost fingers and parts of hands to machinery. It's gotten a lot better lately, but for a long time it was a very bad problem. Since most of these workers were Black or from Latin America, there was very little was done to protect them.
When it comes to children there is an additional level of responsebvility that cannot be 'waived' away.
For instance if children tresspass onto your land and hurt themselves, you could be held legally responsible under the doctrine of 'Attractive nuisance'