Well, for both the UFO's and the lights in Data's head there seems to be an assumption: the lights are intentional, and not the unavoidable side effect of some other process or device. It is entirely plausible, relative to the rest of the UFO phenomenon and the Star Trek universe, that there are components that cannot function, or would be extremely inefficient, if they did not produce light as a side-effect. (note when I say the UFO phenomenon, I am referring to the public interest in UFOs, not the fact that people see things that can't explain with the information available) I am not trying to justify either, but in relation to how off-the-wall the rest of it is light does not seem that out of the ordinary.

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I met this wonderful girl at Macy's. She was buying clothes and I was putting Slinkies on the escalator.
-Steven Wright



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