Take the following as truth: In those countries where dialect study is undertaken, dialectologists observe that there are today many factors militating against the strict maintenance of older dialect  the standardization of terminology as adopted by national periodicals, news services, radio, and television; the establishment of  prestige  dialects and, through the media, their promulgation; and the huge population shifts that have taken place, particularly in the U.S. since WWII.
Then the following statement: "In those countries where dialect study is undertaken, people have an exceptionally poor understanding of how language has changed over time." is true, false, or inconclusive?
Answer: Inconclusive