Here is where their smart chip is important:

Contrary to the assertion of the authors of this paper, simply being aware that the information one provides to Facebook may be used for research purposes does not constitute informed consent. The fact that users agreed to a Data Use Policy which notes that information may be used for research purposes does not, as the authors state, "[constitute] informed consent for this research."

Why is the CDC unable to tell the truth? Why can't the agency even issue a statement that is internally consistent on this issue? Why is the CDC ignoring the wealth of evidence that it admits exists, which shows that many ex-smokers have used electronic cigarettes effectively as a smoking cessation aid?

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