Complaint to health practitioner: “I have an earache.”
2000 B.C. Here, eat this root
1000 B.C. That root is heathen, say this prayer
A.D. 1800 That prayer is just superstition, drink this potion
A.D. 1940 That potion is worthless snake oil, here, take this pill
A.D. 1985 That pill is ineffective, take this antibiotic
A.D. 2000 That antibiotic is artificial, here, eat this root.