Money is at its most seductive in its paper form. There are few more pleasing things in life than typing your PIN into a hole in the wall and being served up lovely, crisp banknotes. In sufficient quantity they are a passport to anything and anywhere in the world, and this freedom is intoxicating. They are also the most sophisticated pieces of paper that have ever been made, which they need to be because they are a literal, material manifestation of the trust we all have in the whole economic system.
