By way of background: The nice thing about A4 is that A3 is twice the area
A4, A2 twice the area of A3, and so on, all the way down to A0. And while
we're on the subject of useless trivia, one A0 sheet is exactly 1 square
Can any of you paper experts tell me why since a sheet of A0 paper is
exactly l square meter that it wasn't called A1 instead of A0?