See also https://www.explainxkcd.com/wiki/index.php/2322:_ISO_Paper_Size_Golden_...

		PaulHoule 24 days ago \| parent \| context \| favorite \| on: LiftKit – UI where "everything derives from the go... See also https://www.explainxkcd.com/wiki/index.php/2322:_ISO_Paper_S... European paper sizes are based on a sqrt(2) spiral so cutting in half works well.