https://en.wikipedia.org/wiki/Cottingley_Fairies#Initial_examinations
Interesting, I retract my statement. Science does deal with fairies if evidence for their existence appear. (falsifiable evidence in form of a photo)
then you've also defined them as being something that cannot interact with nature and are therefore pointless in every conceivable context because they cannot possibly affect our world in any way.
Not necessarily correct, there might still be ways to interact with nature that we do not know of, it is not even hard to conceive of since it was only in 1965 that we discovered background radiation. And there are probably newer ways of measuring and places to do that measuring that has been discovered more recently, and i reason that there are still more to come.
I can't parse that sentence. Care to take another swing at it? The opposite of what? Does "except" mean accept or expect?