I should preface this by mentioning that I realize this is a bit of a controversial book. And the show that it inspired, Ancient Aliens, may be even more controversial in its claims. But who doesn’t like a good ol’ conspiracy theory or “out there” claims? I, for one, love hearing flat-earthers try to back their claims. But let me be clear – this book only asks questions and puts forward hypotheses as to possible answers. And the author even acknowledges how crazy these may sound.