A Short History of Medicine
I have an earache...
2000 B.C - Here, eat this root.
1000 A.D - That root is heathen. Here, say this prayer.
1850 A.D - That prayer is superstition. Here, drink this potion.
1940 A.D - That potion is snake oil. Here swallow this pill.
1985 A.D - That pill is ineffective. Here, take this antibiotic.
2000 A.D -That antibiotic is artificial. Here eat this root.