I suppose I could make up a connection to Cerebus or Dave or Ger or something, but the fact is that I just liked this wherever I saw it and I came across it again this morning:
History of Medicine
2000 BC : "Here, eat this root."
1000 BC: "That root is heathen. Here, say this prayer."
1850 AD: "That prayer is superstition. Here, drink this potion."
1940 AD: "That potion is snake oil. Here, swallow this pill."
1960 AD: "The pill is ineffective. Here, take this antibiotic."
2000 AD: "That antibiotic is synthetic. Here, eat this root."
(Come to think of it, I guess I see the connection.)