This is an unimportant implementation detail. I think you have misunderstood the intention of this comment. This is an example explaining why you would need the `none` method. The point of this comment isn't to show the reader what `Post.none` actually returns – it is to show why the naive solution (returning an empty array) wouldn't work.

So if you feel the need to improve this, you should try to keep the spirit and focus inline with the original comment.