You miss the point, and your aggressive tone is not conducive to civil discussion. As you say, any language can use a system of writing, so if one doesn't, it'

You miss the point, and your aggressive tone is not conducive to civil discussion. As you say, any language can use a system of writing, so if one doesn't, it's not because its users can't write, but because they don't want to write. Writing is literal stone-age technology, after all.