~2000 B.C.
Patient: I have a sore throat.
Doctor: Eat this root.

~1000 A.D.
Patient: I have a sore throat.
Doctor: Roots are heathen. Say this prayer.

~1700 A.D.
Patient: I have a sore throat.
Doctor: Prayers are superstitious. Drink this potion.

~1850 A.D.
Patient: I have a sore throat.
Doctor: Potions are snake oil. Take this pill.

~1950 A.D.
Patient: I have a sore throat.
Doctor: Those pills are ineffective. Take this antibiotic.

~2000 A.D.
Patient: I have a sore throat.
Doctor: Antibiotics are unnatural. Eat this root.

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