One possible answer appears in Wride's column. She writes:

The problem with e-cigarette experimentation, for the prospects of cigarette smoking initiation, is that youth are getting used to sweet and flavored products. It is going to be extremely difficult to go from the sweet and flavored taste of the electronic cigarette to the harsh taste of a tobacco cigarette. That transition is not favored, at least not on a theoretical basis. Why would a youth switch from a cherry e-cigarette to a Marlboro?

The Rest of the Story regrets to inform readers that a mistake was made in the above report. While the bulk of the report is true and accurate, there were a few minor, technical errors made:

Although the survey approach described above would lead to "invalid" results, I would never argue that survey studies should be thrown out and that we should only be conducting RCTs. My point is that there are strengths and limitations of various study designs, and causal inference is enhanced by having research evidence from multiple study designs. On balance, the strengths and weaknesses balance each other out, leading to a much greater ability to draw valid conclusions.

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