This book was originally published in 1998. From Roman times until this century the business of government has been largely carried out by the writing of letters, either in the form of instructions or of authorisations to deliver information orally. These documents were addressed to the recipient and authenticated by a seal or signature, often having a greeting and a personal conclusion. The messengers who took them also carried copies of laws and regulations, summonses to courts and whatever else was needed for the administration of the country. Without a means of speedy delivery to all...