In most of the world, Filofax is a nostalgic 1980s artifact. In Germany, it’s still on the shelf. There’s a reason — and it tells you something about how the Germans plan. Walk into a Thalia bookstore in Berlin, a Müller in Munich, or a Manufactum anywhere, and go straight to the stationery section. You’ll find things that have quietly disappeared from most other countries: leather ring-bound organizers, refillable calendar inserts for next year already stacked in October, fountain-pen-friendly notebooks…