Seeing how curated and censored our modern "mainstream" anything is by our self imposed overlords (news, politics, social media, TV, movies, education, books, all branches of science, history, etc.), in conjunction with all the other confirmed conspiracies, it gives a lot more credence to men like Graham Hancock who postulate past advance human civilizations, and makes me wonder how much even our recent history (last hundred years) has been completely warped.