You need to work on your English. I'm not being arrogant, you clearly speak it far better than I speak any language other than my own but it's making your sentences unclear.
you can either be arrogant or intimate. no problem and no relevancy with me.(I do not mean your underlined implication it is something else,follow--->) because I am modern/contemporary educationalist. Thus I do not need any help for improvement (This also may have potentiality that you might understand it incorrectly,because I do not mean interactions,it is again somethings else) simply,I am an free academician/academics. (I have no relation with any university,but hopefully you will see my academic papers)
We can never have any direct observations of black holes by their very nature but there's something with millions (or is it billions?) of solar masses sitting right at the heart of our galaxy and it's no bigger than our solar system and is giving off no light. What do you think it is?
well, if you exactly mean that you will never ...have any direct observations of black holes. then, why are dealing with that ...don't bother yourself. be sure that you will not be able to make a good effect
but ,although I do not agree to you (that is because in fact, I think and propose to you (with some conditions starting with questional particle "if" )
"if you were not able to have any direct observations, how can you say that they exist? (Don't please meantion indirect observations!)
mm,I clearly mean that there might be something ,for instance some tools, that might provide some clues about this issue.
ah, I had written some papers indirectly relevant to this issue , but while the expected papers directly got rejected , the papers that I was not hopefull about that brought me very supportive letters. but,I will return the first sentence.
I am contemporary educationalist and unfortunately this type of modern education is not being supported at everywhere yet,therefore something is being postponed or has to be interrupted.)
I know,I used some sentences that might require explanations (if you do not understand,..)
anyway,my general advice, science is NOTHING unless it is efficacious.