I then explain that the gateway hypothesis is actually unsupported by any scientific evidence and that there is some evidence which is inconsistent with the hypothesis.

Fortunately, the vast majority of the public appears to have better scientific judgment than the FDA and to recognize that cigarette smoking is far more hazardous than the use of an electronic nicotine delivery system that merely aerosolizes nicotine from a propylene glycol solution that is completely free of any tobacco or any combustion.

(See: Grana RA, Popova L, Ling PM. A longitudinal analysis of electronic cigarettes use and smoking cessation. JAMA Internal Medicine. Published online March 24, 2014. doi:10.1001/jamainternmed.2014.187.)

“The general idea is that it’s absolutely threatening to admit you’re wrong,” says political scientist Brendan Nyhan, the lead researcher on the Michigan study. The phenomenon — known as “backfire” — is “a natural defense mechanism to avoid that cognitive dissonance.”

Can you imagine if the tobacco companies used the same logic as Dr. Glantz? They would, according to his scientific reasoning, be perfectly honest in communicating to the public statements like this:

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