Spock: "Captain, our information on these people and their culture is not
correct. This is not a primitive society making progress toward
mechanization. They are totally stagnant. There is no evidence of any
progress as far back as my tricorder can register."
Kirk: "That doesn't seem likely."
Spock: "Nevertheless, it is true. For tens of thousands of years, there's been
absolutely no advancement, no significant change in their physical
environments. This is a laboratory specimen of an arrested culture."
Kirk: "Thank you, Mister Spock, that might be useful."
-- "Errand Of Mercy", Stardate 3198.4