evidence: Even in the 21st century there are a vast number of people who believe that the earth is flat. According to the Flat Earth theory believers think that our beloved blue planet is shaped like a disc. Elon Musk decided to put his two cents and try to settle the debate once and for all. [...] On his Twitter page, the SpaceX and Tesla founder started an online poll asking his followers to respond if the earth was in fact, flat, hollow, or both. At the time of writing this report, around 4 lakh users had voted on the poll, with 60% of people claiming the earth is both flat and hollow. [...] If it wasn't clear that the whole thing was in fact a big trolling attempt of flat earth believers, then the response to Elon Musk's tweet removed any further doubts.