And as vaccine take-up reaches critical levels in countries such as Israel, the United Kingdom, and the United States, everyone will begin comparing whether certain post-COVID infrastructure and mitigation efforts are truly worth the cost and hassle they impose. Israel has instituted its version of a vaccine passport — a green pass. Even there this measure is surrounded by controversy and concern about violations of privacy, or emerging medical apartheid. The United Kingdom is deliberating about a vaccine passport program, though resistance to it in the Labour Party and among Tory backbenchers could sink it. In Florida and Texas, Republican governors have largely reopened their states for business, rejected vaccine passports out of hand, and are –for now — still seeing case rates and hospitalizations fall. So you see European nations still canceling major sporting events because crowds aren’t allowed to gather for them. You see states in the American Northeast allowing only a fraction of capacity, and only with proof of vaccination or a negative test. And states in the South where baseball looks like it did before COVID, save for a few people wearing masks of their own volition. If the least restrictive and least intrusive localities find success in the vaccine era, it may become rapidly untenable for other jurisdictions or nations to continue wrapping themselves in Plexiglas and other vax-passport technology. Quarantining foreign travelers in COVID hotels is a massive government burden and an even larger impediment to the recovery of business and leisure travel. Will London really tell people flying in from Miami not to eat out because they lack a U.K. vaxpass? Will London tell Londoners who have just flown back from Miami to not spend their money? Not if vaccination take-up remains high, and cases continue to plummet.