New research shows that brain systems governing things like impulse control, planning ahead, and balancing risk and reward are still maturing during late adolescence. Should we, as a result, rethink laws that regulate the age at which individuals are allowed to do certain things? Some have argued, for instance, that the new research raises questions about whether we should let individuals drive when they are 16 or serve in the military or purchase a gun when they are 18. What’s your opinion?