Sadly, the agency concluded that it is not sure that e-cigarettes are any safer than tobacco cigarettes. The FDA states: "Many consumers believe that e-cigarettes are "safe" tobacco products or are "safer" than cigarettes. FDA has not made such a determination and conclusive research is not available."

But there is another important factor that Glantz is forgetting. In the existing studies, the smokers examined had simply cut down on the amount they smoked without substituting another source of nicotine. Therefore, they were highly likely to be compensating by inhaling much more heavily on the cigarettes that they smoked. In contrast, when dual users of e-cigarettes and cigarettes cut down substantially on their smoking, they are doing so by substituting non-tobacco, nicotine cigarettes. One would expect much less, if any, compensation. Thus, the studies that Glantz cites are not quite as relevant as they would otherwise be.

And this is why when some responded to our proposal for a randomized behavioral study by arguing that such an approach was invalid and that we should do a survey instead, I viewed those responses as being unscientific and unsound. Instead, I believe what is truly behind these draconian opinions (draconian because they would throw out an entire line of potential evidence) is a bias towards electronic cigarettes. I'm not arguing that it is a conscious bias. It may be subconscious. But I don't believe that any objective scientist would argue for completely throwing out a randomized clinical study design and relying solely on survey evidence to draw conclusions about the effectiveness of a product such as electronic cigarettes.

Facebook’s actual contains none of these, only general statements that “we may use the information we receive about you … for internal operations, including troubleshooting, data analysis, testing, research and service improvement.” and “We give your information to the people and companies that help us provide, understand and improve the services we offer. For example, we may use outside vendors to … conduct and publish research.” Neither of these comes close to a “description of the procedures to be followed” or a “description of any reasonably foreseeable risks or discomforts,” and the Data Use Policy doesn’t even attempt to offer a contact for questions or an opt-out."

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