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What about UFOs?
There is an expression that engineers use: "signal to noise ratio." It refers to the difficulty of getting the real signal, say a voice over the telephone, to stand out and be heard above all the noise and clutter that is also on the line. On the subject of UFOs the signal to noise ratio is so abysmal, that it does no good to listen.
That whole subject is really irrelevant to our own human quest to travel to space. If we humans are going to figure out how to build space vehicles, then WE have to build our own space vehicles. It doesn't matter if it has or has not been done by someone else.
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.
For example, if someone in the previous century saw a film of a 747 flying past, it would not tell them how to build a jet engine, what fuel to use, or what materials to make it out of. Yes, the wings are a clue, but just that, a clue. To do real work, to really determine how to build the next generations of vehicles, we need our own information. There are plenty of possibilities for credible approaches emerging from our own scientific literature. It would be a waste of our limited time to go chasing down mere hearsay.
Originally posted by dgtempe
To build one you need nothing more than reverse engineering. I'm no engineer but it makes perfect sense to me.