I dont imagine anything. Unless under the influence of a powerful medical narcoticm and then i am hallucinating, and and very well aware of that fact.. ANgels are no more a produc t of my imagination than dogs or cats. Either everything in life is an illusion or nothing is, if you apply the same standards of evidence and the same logic to establishing any reality.
So yes I can KNOW such things are real, to the same extent i can know any thing outside my mind is real. And for the same reasons.
There may be nothing logical in believing in the paranormal. I dont believe in anything. But it is illogical to deny evidenced reality no matter how strange or unbelievable it seems to a person. The paranormal is real Ive been dealing with it all my life and i can verify most of that via indpendent observers and witnesses. .I'd go so far to say that there is nothing paranormal, merely normaities we dont fully understand as yet. Most of the paranormal will be achievable by human science within 200 years includig the dematerialisation and rematerialisation of matter,. the constructionof matter from pure energy via templates and the immortality of the human mind and body and thought transference .
You know you have missed your way ,you should have been a fiction writer,you have the imagination for it.
bearing in mind that I have always thought you were pulling our chain on here and all you write is fiction