While Ric Burns' documentary has been lauded for its comprehensive overview of NYC's history, it contains a number of unfortunate historical errors. Most of these are minor (saying, for instance, that Henry Hudson arrived in New York harbor in 1610 when it happened in 1609), but when they pile up, sentence upon sentence, episode after episode, it makes one wonder who fact-checked this series. More importantly, it makes the entire production suspect. If some of the facts are definitely wrong, how many others are wrong, too?