  But this obligation is a moral one. Thus, the state need not (indeed, should not) legally coerce parents to select or edit their offspring to produce the best children they can have (Savulescu 2001). To the contrary, the state must balance the benefits of potential enforcement against its existing obligations to protect reproductive liberties. Nonetheless, the state might have good reason to encourage parents to take such action, through education and persuasive public health campaigns (not unlike anti-smoking campaigns). On this stronger view, others, too, would be right to express disapproval (Savulescu and Kahane 2009)