The introduction and proliferation of filtered cigarettes occurred mostly in the decades preceding and following the 1964 Surgeon General's report and was mostly complete by 1974. Further reductions in tar yield occurred through other mechanisms, as by 1974, most cigarette brands were filtered.

In fact, the subjects had no idea that they were part of an experiment involving artificial manipulation of their news feed for the purposes of potential inducing happiness or sadness as part of a research study. This potential use of their Facebook account is simply not mentioned in the Data Use Policy. The policy states that the information provided by users may be used for research purposes. It also states that the information may be shared with outside vendors to conduct research. However, nowhere does the policy state that users agree to intentional manipulation by Facebook staff for research purposes.

For this reason, the FDA should think long and hard before jumping into a decision to ban the flavors in electronic cigarettes. It is possible that despite encouraging experimentation among some nonsmoking youth, flavored electronic cigarettes may actually have a net positive effect on the public's health by serving as an overall deterrent to youth smoking.

What would be an example of such a severe problem that it warrants reporting to the FDA? to the medical branch chief in the Office of Science at FDA's Center for Tobacco Products, such a severe problem would be something like if a cigarette "just smells or tastes wrong."

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