There was an interesting exchange between British Health Secretary Sajid Javid and an unvaccinated UK healthcare worker, Steve James, an anaesthesiologist working in Kings College Hospital in London Covid Intensive Care Unit. Dr James explained to Javid about why he disagreed with the NHS policy, and why he hasn’t been vaccinated because his natural immunity is better than that provided by so-called Covid vaccines. But, it went in one end of the syringe, and out the other! The exchange struck me as indicating that the modern world has its own superstitions, as deep as the medieval folk had.