TheCodeBreakers
examined from a sociological point of view. It is secret communication,
and communication is perhaps man's most complex and varied activity.
It encompasses not just
words but gestures, facial expressions, tone of voice, even silence. A
glance can express a tale more sweetly than a rhyme. Basically, all forms
of communication are sets of agreements that certain sounds or signs or
symbols shall stand for certain things. One must be a party to these
preconcerted rules if one wants to communicate.
But all forms of communication are not at all times and all places
known. Those who happen to know one system that others around them
do not can use it for secret communication. Irish troops sent to the
Congo as part of the United Nations force in 1960 spoke Gaelic over the
radio, and the U.N. commander, General Carl von Horn of Sweden, called
it the best code in the Congo. This is a kind of cryptography by default,