Complaint: "Doctor, I have an earache..."
2000 BC Here, eat this root.
100 AD That root is heathen; say this prayer.
1850 AD That Prayer is superstition; drink this potion.
1940 AD That potion is snake oil; swallow this pill.
1980 AD That pill is ineffective; take this antibiotic.
2000 AD That antibiotic is artificial; Here, eat this root and say this prayer!