Which immediately made most of literature and theology illegal. You couldn't posses a poem or a bible unless you could explain to the police any hidden symbolism!
Pictures of the police kicking down doors and shouting "you're nicked - now explain what the poet really meant by a host of yellow daffodils"
http://ansuz.sooke.bc.ca/lawpoli/colour/2004061001.php
Computer programmers think, aha, I can apply an arbitrary algorithmic translation to input A and get output B, and applying the law to B would be absurd, so therefore applying the law to A is also absurd. What they fail to realize is that bits have color -- a type of metadata that law algorithms can see and operate on which your computer algorithms are ignorant of.
You think that encrypted contents of a computer harddrive is a logically equivalent operation to writing things in a form only comprehensible to oneself. This is only true if you're Colorblind.
This entirely depends on whether you view your computer as an extension of your personal consciousness or as being an external service that you're interacting with. I'd rather a society where computers act as individuals' agents, rather than people being at the mercy of the computers.
Big file that is storing your n-th computed prime : innocuous.
Big file that is storing pirated movie, even if called "n-th prime" : not OK.