We know that Covid-19 is a serious virus that has taken the lives of some 4.2 million people worldwide. We know that the vaccines, while not providing perfect protection, significantly reduce the likelihood of someone contracting the virus and dying as a result of it. We also know that high rates of immunisation will result in better protection for whole populations. But here is something else we know: not everyone makes identical decisions in life. Thus, not everyone will choose to be vaccinated. This shouldn’t strike us as particularly unusual. While the vast majority of us will graduate from high school, not everyone will. Most eventually get a driver’s license and a car, but some choose not to. Home ownership is a lifelong dream for the average person, but a minority of people couldn’t care less.