Its been suggested that we might have something to learn by studying UFO stories. I disagree. First there is this signal to noise ratio problem. Even if the stories are correct, they are only as useful as science fiction. Science fiction can be useful to give you some mental picture to get you started thinking about the real issues, but it is no more useful than that. Even if UFOs were completely real, which is doubtful, and even if I had a film of one in front of me, it wouldn't be of much help.
During several space missions, NASA astronauts have reported phenomena not immediately explainable; however, in every instance NASA determined that the observations could not be termed "abnormal" in the space environment.