What mistake do you mean exactly?
We are learning from Australia's experience. What we liked about various Australian states is that they worked extensively on the law's implementation, beyond just passing it. New South Wales, for instance, did a lot of work on that, making sure to set up expert panels and working groups to oversee data and training, among other things, in preparation. Reporting measures were put in place to determine whether the offence satisfied the objectives set out by lawmakers or whether certain populations were experiencing more harm. Those mechanisms were established.