Caveat: Controlling Yourself

I have a very smart 8th grade student who has shown a strong ability to muster well-argued libertarian positions. She obviously does a lot of reading and research online – but I really think she understands the ideas she puts together, and she argues them well. We recently had a debate on the merits of regulating junk food (e.g. New York's recent soda-size law or San Francisco's ban on Happy Meals).