The History of Medicine

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 doesn't work anymore. Here, eat this root.