and, by the way, they're interesting policy arguments on both sides. and more importantly, there has to be a race to figure out what is the danger in vaping specifically, why does this keep happening? thank you for watching tonight. "cnn tonight" with d-lemon starts right now. >> i don't know how to feel about the vaping thing because i know that it has helped a lot of people get off cigarettes, right, which we know are deadly. >> no question and cigarettes -- >> they haven't been around a long time. >> -- aren't banned. so why should vaping be banned? the other side of it is the idea of saying -- not you but the argument that it is safer than smoking, no. it is less bad perhaps but -- >> perhaps. because they haven't been around -- my thing is they haven't been around long enough. i don't know if some of these symptoms are from -- are residual effects from people who were actually smokers, right? or if it started before they were vaping. i don't know.