Vaccine passports the nudge we need to achieve herd immunity

To hear some people tell it, vaccine passports are just another effort by Democrats, progressives and Satan to take away your freedom, just like when they told you to wear a mask and made you shut down your business.

In a hyperventilating Wall Street Journal op-ed a couple of weeks ago, two medical school professors lit viciously into the idea of vaccine passports, calling them, among other things, "a coercive scheme to encourage vaccination."

But vaccine passports aren't coercive. And as for encouraging vaccination, would that be such a bad