no,no,no,no...
I'm not comfortable with that. It's why I rarely if ever use the word "paranormal" and prefer intead "anomalous". What I want to communicate is "violates our expectations" but I don't want to drag in all the 'spiritualism' baggage. That would be an unjustified leap beyond the evidence (and it would set too many knees unnecessarily jerking).
https://en.wikipedia.org/wiki/Spiritualism
Spiritualism baggage? No-one is sneaking in discussion of seances etc. otoh all know I view nonmundane UFO type incidents as a subset of a wider paranormal i.e. supernatural arena.
"Capricious" - not necessarily,
A matter of individual judgement. Sufficiently wide and deep study should imo impress that capricious is the only consistent and rational characterization of many bizarre encounters.
"strange" - yes, I guess so. Violates our expectations at the very least.
A safe statement as usual from you.
"non-material" - why should I accept that? The evidence seems to point the other way, They are observed through physical modalities, after all.
The assumption being only physically originating sources can generate physical effects. The evidence says otherwise - nonmaterial entities intrude into our space and manifest to our physical senses at will but we have no reciprocal access.
This aspect as all others here has been covered in many previous posts. Observer estimated and in many cases radar confirmed hypersonic speeds without any accompanying acoustic accompaniment i.e. 'sonic booms'. Of objects whose typical shapes are anything but hypersonic worthy of a necessarily air displacing physical object, is imo a very clear indicator of non-material nature of UFOs.
You like others here have iirc never tackled that aspect. And there are various others. Here is one witnessed encounter that eliminates the 'lone crazy/delusional witness' charge of those with an anti UFOs-are-real agenda:
https://www.ufoexplorations.com/witness-to-wanaque-great-mass-ufo
It's impossible to know for sure UFO objects and their influences are wholly or partly projections into the human minds and/or human made and operated instruments. Rather than actual materialized bodies that can reflect light, IR, RF. While simultaneously moving at hypersonic speeds through Earth's atmosphere - without ever emitting a sonic boom.
In either case, the existence of supernatural entities possessing vast abilities is called for.
"intelligent" - maybe in some cases they show evidence of intelligent control, but wouldn't that conflict with 'capricious'?
How? Why should there be any necessary connection between abilities and aims/inclinations? Indeed imo many reported/recorded UFO encounters of a mischievous or whimsical at best nature, puts paid entirely to Frank Tipler's naive belief that 'game theory' somehow ensures a future super-advanced civilization will necessarily be entirely benign and benevolent.
"Extraordinary powers far exceeing ours" - Maybe in some subset of cases. We can't yet exclude the possibility that those are being misconceived. It's probably too soon to be leaping to conclusions like that.
I jumped off the fence long ago. Didn't take years of intense devoted study to form a definite opinion in favor of nonmundane (i.e. exhibiting behavior inexplicable by inherently materialist based science) UFOs incidents being a well established as real sub-category of more general supernatural manifestations.
To each their own conclusions.
PS: Believed by many the best example so far for the reality of supernatural phenomena is the 1977-78 Enfield poltergeist case last brought up p4 #65, #66 here:
http://www.sciforums.com/threads/my-recent-personal-experience-wit-a-unsolved-mystery.164493/page-4
A few more links - to articles on the same:
https://www.higgypop.com/hauntings/enfield/
http://www.hauntedhovel.com/enfieldpoltergeist.html
If you want to be the first here to tackle that case in a scholarly not polemical or vague hand wavy style, feel free to start a new thread just on that topic. After a thorough study of the two YT vids (much overlap but also complementary to each other) and two articles linked to above. Best to start with the latter first imo. Advisable to take careful notes including precise vid times of particular incidents in the two YT vids.
You initiating a new thread rather than me will guarantee a response whereas that may not be the case if I initiated it. A suggestion.