It's a big part of the problem. I wish we could just narrow it down to the one thing. At the end of the day, humans being what they are, given any device, they will figure out a way to abuse it. So you have the perfect e-cigarette that is the right dose. Well then, you have someone who smokes it 18 hours a day.
Acetaminophen, well, it's really easy to overdose with it too and to take too many doses of acetaminophen. Who would have thought that cold medicine would be ground up by kids to get stoned? This is the reality we live with. In the absence of any regulations, in the absence of any standards, it's the wild, wild west. It's like no one has a clue what they're going to be inhaling.
If standards are at least put in place, then we can say that at least the mechanism is reasonably safe, and once the studies start coming in, we'll know.
Can we treat this as a cessation device? Personally, I would like to see the ones not containing nicotine banned, because what good do they do? They're being promoted to kids, “Oh, this is cool.” Well, it's stupid, but kids will be kids. Focus all of our energy on something that actually has the potential to do some good, and that's getting people off traditional cigarettes. Yes, there might be harms associated with that new tool, but nothing—nothing—is going to be as bad as smoking traditional cigarettes.