In the Middle Ages witches used to tell fortunes and prescribe cures for ills demanding only that the patient “”cross my palm with silver”.
All of the fortune-telling and part of the cure prescriptions were nonsense, but some made sense. For example, witches prescribed thyme-leaf tea for colds and flu. Nowadays, pharmacists prescribe various pills which contain the active ingredient thymol, C10H13OH2.
The range, purity and accuracy of prescriptions have grown exponentially since the Middle Ages. And so has the amount of silver crossing palms.
In the Middle Ages, governments persecuted the witches. Now they join in the business of drug prescription, and rightly so. Without intervention, drugs would be denied the poor and research incentives for drug companies would disappear.
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