The Every Day Calendar

Maybe my cynicism is getting the better of me, but how is this better than a page with all the days of the year printed on it, hanging from the wall, with a highlighter hanging from a string next to it?

Or you could go all Seinfeld and get a "big wall calendar" and a "big red magic marker". https://lifehacker.com/jerry-seinfelds-productivity-secret-2...