Anthony North: I research most mysteries but none involve such emotion as the UFO. In no other area are views so entrenched. We talk about fundamental politics, fundamental religion, but they are insignificant compared to a fundamental stance in Ufology.Why is this? I think the answer lies in the contemporary nature of the phenomenon. A UFO can be seen in the sky now, and it will appear so real, so immediate, that it is impossible to consider it as anything other than existent.A broad church: This reality lies uncomfortably with Ufology, for the discipline is a broad church. Various researchers cover a host of aspects of the phenomenon. A short list will suffice to explain what I mean.Ufologists can specialize in the paranormality of the subject, in the psychology, the sociology, the physics, meteorology or mythology. The subject branches out into conspiracy theory and cults. Researchers can be skeptics or ‘nuts and bolts’ believers.And never the twain shall meet. There are some exceptions, but rarely does the discipline have the foresight to realistically pose the possibility of all these areas being intertwined and essential to the understanding of what is really going on.

Different realities: Some strange phenomenon is occurring in the skies above us, and it has been going on throughout history. Personally, I don’t think it is caused by extraterrestrial visitations, but the following is true whether it is ET visiting us or not.Reality is not a stable construct. Whilst we can argue for a ‘real’ world ‘out there’, how that world is viewed is coloured by our own prejudices and views. This is believed in from eastern philosophy to quantum physics, where the observer is essential to what is viewed.This is vital for placing the UFO in perspective. If we look at the subject in the historical perspective, sky phenomena has been seen as everything from gods in chariots to flying saucers, from sailing ships to ghost rockets. And in each case, the nature of what is seen is coloured by how it was reported.

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a few theories have been proposed as to the origin of the UFO phenomenon.

1.) extraterrestrial technology from another planet.
2.) governmentally funded, man-made technology created covertly on Earth.
3.) a shapeshifting form of the "Ascended Masters".
4.) demonic/angelic apparitions.

if there are any other theories, provide me with linkage.

There's the multidimensional/ultraterrestrial hypothesis, saying these things originate in a separate dimension and cross over from time to time, it's hard to know if this is really much different from #3 or #4.

Also there's the 'underwater civilization' hypothesis,