 Note that on the conception of institutions as embodied structures of roles and associated rules, the nature of any institution at a given time will to some extent reflect the personal character of different role occupants, especially influential role occupants, e.g. the British Government during the Second World War reflected to some extent Winston Churchill’s character. Moreover, institutions in this sense are dynamic, evolving entities; as such, they have a history, the diachronic structure of a narrative and (usually) a partially open-ended future.