I don’t have a good answer for that. Which is why I think it’s far more complicated than you can reasonably do with an age law. I think an 11yo who touches a 2yo is probably molesting them and something should be done. Same with an 18yo and the 11yo. But I don’t think you can just assume that for two 2yos or two 11yos. On the other hand, if there’s no consent, a 40yo who touches another 40yo is doing something wrong.