Nivellios said “I wonder how these topics and ideas come up?”
Well, someone wrote “the world began thus…”
Someone else wrote “…and so the world ended”
Everyone else is trying to fill in the gap and collect royaties.
i.e. E.E. ‘Doc’ Smith, R.A. Heinlein, A.C. Clarke, Mary Gentle…
Ideas - A lot came from the Arkansas Idea Factory until the EPA shut them down due to toxic spill of wild @$$ ideas back in -oh but that’s classified- Never mind