If "they are not harmless" is the worst that opponents can say about electronic cigarettes in 2014, then there doesn't seem to be much of a controversy over whether these products are much safer alternatives to smoking. Likewise, there doesn't appear to be much of a controversy over whether switching to e-cigarettes is a wise choice for smokers who want to quit but feel unable to do so cold turkey (which is, of course, the best option).

Tobacco abstinence and tobacco harm reduction.

In order to represent informed consent, there are several other elements which must take place. These are best by Professor James Grimmelmann over at :

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