UFOs are a useful analogy. Let's just consider the "flying saucer" class of UFOs that people sometimes claim to see, but let's imagine we live in a world where

UFOs are a useful analogy. Let's just consider the "flying saucer" class of UFOs that people sometimes claim to see, but let's imagine we live in a world where Flying Saucers aren't just a figment of the imagination but are also mass produced by many companies, built by hobbyists, owned in large numbers by governments and all manner of organizations. Flying Saucers are regularly flown by all these people for reasons ranging from test flights to reconnaissance to just plain fun. Now, in this world some people will mistakenly spot Flying Saucers for the same reasons that people on Earth. In fact, spotting Flying Saucers will be even more likely because everyone will recognize they are real. Now, in Flying Saucer world, suppose that 93 people, including police officers, over a period of weeks, spotted and reported, sometimes repeatedly, a group of Flying Saucers flying in a pattern - something that it's well known Flying Saucers can do. Would you conclude that these people are all mistaken and caught up in mass hysteria?