"Doctor, I have an ear ache." 2000 B.C. -
"Here, eat this root."1000 B.C. - "That root is
heathen, say this prayer."1850 A.D. - "That prayer
is superstition, drink this potion."1940
A.D. - "That potion is snake oil, swallow this
pill."1985 A.D. - "That pill is ineffective, take this
antibiotic."2000/2003…… A.D. - "That antibiotic is artificial. Here, eat
this root!"