Silas, i think that it was you that in the previous page of this same thread said that there are no evidences that ufos are aliens. YOu know what? you are correct.
First, when i say "ufos" i am speaking about the phenomenon that everybody knows, the strange flying objects that sciences does not explain (the 5% of ufos that are really strange indeed). So, "ufos" in this acception does not refer to an asteroide that was mistaken by an "ufo", etc,etc.
In my country (Portugal....the reason for wich my english its so bad...we speak portuguese
) there are some interesting and old books (70s) about ufos. These scientists are very serious about their job and you can see that they use a scientific aproach to ufo study. They dont take any thing for granted and they give some interesting information or "hints" on how we shoucld see the phenomenon.
One of the first things that they say its that the word "ufo" its "charged" of mysticism and induces people in mistakes. They prefer to speak about (next its my translation to english) "unknow aerial phenomenons" (uap).
In the very beggining they say that UAPs must have, possibly, one of the fowllowing origins:
1) It comes from this universe. Its an alien origin (the most typical aproach) or its a terrestrial one. In the last case we can have two possibilitys: they came from a secret part of our planet and maybe they are different beings OR they are just human made.
2) It comes from another universe/dimension, whatever you call it. In that case, "dimension" here includes "time" dimensions. So, maybe (just maybe) the UAPs come from the future. For example, they could be "humans" (or aliens) coming from the future.
3) They are spiritual entitys.
4) Dont remember what they say in point four but i think that its an open point to another not explored possibility.
You m ay argue that some of these possibilitys are stupid, but at least they (the scientists) have explored something. At least they gave some ideas, since there none of them.
Another thing thet they speak about, its the fact that UAPs (or ufos if you prefer) are inteligent. In all things that they do (the movements in the sky, etc) seems to be from inteligent entitys (they call entitys, because we dont know what they are: aliens, humans, spirits, robots, whatever). It seems that its not a natural phenomenon (atmospheric, etc).
Another thing, they think that possibily the UAPS are not american, russian, japanese, whatever, secret technology, because there are many documents and evidences that UAPs are more ancient than we think. At least they are before 1900 (XIX century or less).
For example, in another book, one of the authors give many strong evidences that the Fatima Aparition* (read above) its an UAP apparition. They give so many clues, proofs, evidences and testmonies that you will see the case with different eyes.
All of these its just to say that there are people studying the UAPs with a nice aproach, leaving back all the "mystic" stuff. There are good works out there and we should keep analysing it.
*Pope John Paulo II was an adept of that phenomenon. Do you remember the 3 little shepards (it was in Portugal that occured this case) that had a vision of Maria (Jesus Mother) saying things to them? Do tou remember the "third secret of Fatima"? Thats the phenomenon that i am speaking about: "Fatima Apparitions". There were some of apparitions in different ocasions. Dont remember the details of the case.