Measurement of postal importance
Do we still use and need the Post Office? A pretty good comparative indicator:
In 1937, as narrated in
this episode of 'Can You Imagine', a Brooklyn postman got lazy and tossed
several hundred pieces of mail over the course of several days. Customers complained loudly and the postman was caught quickly.
In 2010, a postman near Portland got lazy and tossed at least
35,000 pieces of mail over the course of a year before the Post Office caught him.
Looks like the 'Postal Importance Ratio' between 1937 and 2010 is about 100 to 1.