Carl Sagan’s thirteen-episode documentary series Cosmos: A Personal Voyage, which originally aired on PBS in 1980, is the most watched PBS documentary series in history. The miniseries, which is, broadly speaking, about the history and importance of science, has had a massive influence on both our culture as a whole and on individual people’s lives. Many people say that watching Cosmos growing up was what inspired them to go into STEM.
Unfortunately, while Carl Sagan may have been a brilliant scientist and a great science popularizer, he was an unbelievably terrible historian and, in the show, he gets a boatload of facts about history blatantly wrong. Because Sagan was a scientist with an established reputation, though, many people have assumed that everything he says in the miniseries must be correct and, as a result, these misconceptions have spread and become embedded in popular culture.
Perhaps the most influentially wrong segment in the whole series is a twenty-two-and-a-half-minute segment in the last episode about the destruction of the Great Library of Alexandria and the murder of the Neoplatonist philosopher Hypatia. In this one segment, Sagan manages to promote what seems like roughly half of all the misconceptions about the ancient world that I have ever debunked.
I wrote an article in August 2018 debunking misconceptions about Hypatia and another article in July 2019 debunking misconceptions about the Library of Alexandria. In both of those articles, I have noted that many of the misconceptions I debunk originated from Carl Sagan’s Cosmos, but, in those articles, I did not address Carl Sagan’s PBS miniseries directly.
I have therefore decided to undertake the ambitious task of going through the entire segment about Hypatia and the Library of Alexandria and correcting all the inaccuracies I come across. This should give you some impression of how historically accurate Carl Sagan’s documentary really is.
Continue reading “Carl Sagan Was Really Bad at History”