Here, they find a correlation between e-cigarette use and higher and more sustained levels of smoking. But because this is a cross-sectional study, they cannot determine which came first. In other words, what is the direction of the causal relationship? Does the e-cigarette use precede, and cause, the smoking? Or does the smoking precede, and cause, the e-cigarette use?

The truth is that this paper provides no evidence whatsoever that e-cigarette use is a gateway to smoking. Instead, it is entirely possible - and quite likely - that youths who use e-cigarettes are more likely to be heavier and more resistant smokers.

The truth is that these groups are stuck - trapped in a blinding ideology in which science plays absolutely no role and positions are based on pure, raw emotion. And the emotion against anything which looks like a cigarette is apparently so strong that it drowns out even the most solid evidence of the life-saving potential of a product that resembles smoking but delivers nicotine with only a minute fraction of the dangerous chemicals, and which, with proper manufacturing, appears to deliver only one chemical of any significant health concern.

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