Travel was circumscribed in the medieval era, but it did take place. Also, there was a common language of scholarship that unified all of Western Europe: Latin. An investigator who made a discovery could transmit this information to other scientists by letter. There was continual scientific discovery during the Middle Ages. There was a systematic development of theoretical physics. This was not known until it was discovered by Pierre Duhem. It was not known by historians until the mostly posthumous publication of his ten-volume work, Le Système du Monde (1913–1959). He died in 1916. The first five volumes appeared in 1913, 1914, 1915, 1916, and 1917. Humanists in France’s academic guild kept the next five volumes from being published until 1954. It took his daughter’s threat of a lawsuit against his publisher to get the long-suppressed manuscripts into print. This is one of the most flagrant cases of academic suppression in history.Chapter 38: Patents, Copyrights, and Trademarks in Christian Economics: Scholar, by Gary North
You won’t find a mention of this outrage in Pierre Duhem’s listing in Wikipedia or in Encyclopedia Britannia.
(“What’s that?” asked the young man in the audience.)
I wonder what Our Betters are suppressing today.