I think what many of the reviewers here seem to have failed to recognise was the obvious bias of the director of this documentary - he is not a flat earther and the film was about exposing their ideas as ludicrous and was focused on showing something about the people who believe in this theory and how they react even when they prove themselves wrong with their experiments. It was never meant to be based on the science, but a documentary on the people behind this theory and a bit of an explanation as to WHY they believe it and refuse to acknowledge proven facts. Please realise that this film was not commissioned by the Flat Earthers and is not about any of their "evidence" as there are plenty of videos on youtube already, and there are so many moments where you realise that the purpose of the film is really just to help people understand why people are so adamant to believe this theory and how deep it goes for them. The director of this film is an independent film maker who does not believe the earth is flat and he gives many clues throughout that this is the case. I found it extremely entertaining and well made.