[ExI] why do we need them?

[TwentFirstCentury Matters]

All the reasons you've all furnished are valid,
but I surmise espionage is #1. 
Govt, industrial, personal spying
are all more prevalent than we like to think.
what is cryptography all about, anyway?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.extropy.org/pipermail/extropy-chat/attachments/20130804/6375044b/attachment.html>