You keep calling it a "letter" but it is not just a "letter" in the sense that I can write a letter to you, it's a letter written by experts in the field to a t

You keep calling it a "letter" but it is not just a "letter" in the sense that I can write a letter to you, it's a letter written by experts in the field to a top ranked scientific journal that has been editorially reviewed (by experts). > If you cannot reliably judge the legitimacy of a pre-print in an area, then you aren't qualified to judge the legitimacy of any scientific comment in that area. I agree, but now we are moving into the content and not just judging the book by its cover.