The History of Medicine
2000 BC: Here, eat this root.
1000 AD: That root is heathen. Here, say this prayer.
1800 AD: That prayer is superstition. Here, drink this potion.
1940 AD: That potion is snake oil. Here, take this pill.
1985 AD: That pill is ineffective. Here, take this antibiotic.
2011 AD: That antibiotic doesn’t work any more. Here, eat this root.
Thanks to The Herbarium for this short history of medicine lesson!