There are stories of advanced technology from the ancient pastthat seem too impossible to be true. Some are spoken of inlegends and myths while others can be seen today with the nakedeye. These technologies challenge everything we think we knowabout the innovation of our ancestors. Is our most cutting-edgemodern technology merely reinventions of those that existedthousands of years ago? And if it is, where did theseincredible lost inventions go?