Yesterday the Boston Public Health Commission voted to ban the use of electronic cigarettes in workplaces, including outdoor areas such as restaurant patios. It says it is simply "clos[ing] a loophole" by "treat[ing] e-cigarettes like tobacco products." In the absence of evidence that e-cigarettes are a hazard to other people, what possible justification is there for treating them the same as conventional cigarettes? I mean, they look like cigarettes, but surely that superficial resemblance is not enough for a scientifically grounded agency like the Boston Public Health Commission. Or maybe it is. Here is the best the commission can do...