And it seems to me something very similar goes on with e cigarettes. There are some who deeply, sincerely have a revulsion to e-cigarettes because they may fear, genuinely, that what has been done on denormalizing
tobacco will be undone by e-cigarettes. Or they may look back on their careers and see that this sea change undermines many certainties they have. This is a painful place to be. I was somewhere not far from there on e-cigarettes not that long ago. But while I understand it, it doesn’t mean I am content to leave people there. We must move forward. We cannot use poor science on formaldehyde or particles or distortion of the precautionary principle as a justification for not moving forward. Public Health must be at the sharp end. There is often a delay between evidence and practice at the sharp end, as I remember from the early days of HIV.