Hilariously, the pilots are apparently all in on it - and have just been flying you to parts of South America all these years. Flat Earth theories have been shot down by just about everyone capable of rational thought, but the theory is still enjoying a current resurgence. Over 200 conspiracy theorists gathered at a hotel in Birmingham for the UK’s first Flat Earth Convention. The convention, which took place over three days, saw nine speakers take to the stage to explain their theory as to why the Earth is flat.