The bank note that Dominique Weil used to buy ice cream for her family at the beach this past summer may have traveled a long way. The note, a product of international treaties and detailed artistry, could have crossed a dozen international borders or more. Complicated decisions from individual consumers to corporate accountants and government agencies determined its path from bank to pocket to cash register and back – possibly saved for days or years in case of a rainy day. After getting too old, worn, or torn, treasury inspectors may destroy and replace the note. Or if inflation is too high, it could be removed from circulation altogether.