There have been discussions. If we look at the U.K. age-appropriate code or we're looking at general design for sites for children, there can be a range of tools that can be used. There could be parental approval or there could be education, etc.
A big part of the discussion is the risk-based approach. The higher the risk, the higher the tool you're going to use. If you go to the age verification, that's a higher-level tool than parental approval, or education or outreach.
All of those things can be considered, but if the goal is to get at pornographic websites, I raise the question in terms of the numerical element. So—