Is it possible that e-cigarettes are part of the public health solution and not just another way to trap young people into smoking? Are they a pathway to ending tobacco cigarette use or a dangerous product that could undermine efforts to reduce smoking?  In a careful and comprehensive analysis of the emerging controversy and evidence, Drs. Amy Fairchild, Ronald Bayer, and James Colgrove, of Columbia University Mailman School of Public Health, published the commentary “The Renormalization of Smoking? E-Cigarettes and the Tobacco ‘Endgame’” in the New England Journal of Medicine where they wade into this contentious debate.