I agree basic knowledge is needed at least.. you can refine yer basic knowledge as you work.. thats what i do anyway
Which renders it redundant, does it not? Being an expert on 'The Pencils Famous People Used' is, to my eyes, akin to being an expert on absolutely nothing. Of course, should one choose to write a book about such matters then no doubt numerous pencil-fetishists would buy it and the knowlege would redeem itself by having a real-world application, but of itself knowing what pencil Lord Whatisface used when sketching is of no value to you and is thus worthless.Yes, I reckon that no knowledge is completely useless. You might never find the correct application; that's true of so many things in life.
My stories tend to be populated by demons, angels and other supernatural creatures, but I've never been one. Or even met one.Am I being too simplistic in thinking the writer should write what they know, and if you don't know what you are talking about, how are you writing it?