http://www.slate.com/articles/technology/future_tense/2015/06/jurassic_world_shows_how_hollywood_and_technology_have_changed_since_jurassic.html

John F. Kennedy famously declared a White House reception filled with Nobel Prize winners to be intellectually comparable to Thomas Jefferson dining alone. It’s hard to fathom that the erudite omnivore Jefferson knew nothing about dinosaurs. Yet the very word dinosaur would not be coined until a generation after his death. Let’s call this lack of knowledge “Jeffersonian ignorance” (a term for which I take complete credit though an editorialist in Eureka, California’s Humboldt Standard used it differently in 1966).