Though these strange discoveries with their inherent sophistication are well-documented, most historians would like to sweep these anomalies under the proverbial rug. Some of these are objects that by scientific measure are very old, but in form or construction appear to be quite modern. They are impossible fossils, out-of-time technology, anachronistic artifacts. In other words, if our history of the world is correct, they just should not exist. But because they don't fit conventional theories, these exceptions to the rules are almost always rejected out of hand. Yet, it doesn't take dozens and dozens of exceptions to challenge established thinking.