Illegal Math
>Various government agencies are crooning that they should be able to knock down whichever doors they please because they're the government.<p>I think this analogy is apt but it actually works against the author's point.  Our government has legally been allowed to knock down whichever door it has wanted to for centuries assuming it has received the proper warrants.  An encryption door cannot be knocked down.  That is a very scary problem for the government and law enforcement.  Things like personal notes, journals, communications all used to be accessible to the government through warrants.  Now that information is all locked away behind encryption.  This is a huge shift in the way governments fight crime.  We need to recognize that fact in order to have any productive debate with anti-encryption folks and we can't just pretend the government is evil because they wanted to keep the status quo of the physical world alive into the digital era.