Dear Simon,
it is certainly true that I regularly find that discussions of information could benefit from, as it were, "a hacker's touch", or at the very least a dabbling in the implications of actually implementing a given idea. In fairness though, I am not sure that computer scientists are necessarily the worst offenders. Cosmologists maybe? :)
I have been thinking indeed about experimenting in silico with these ideas, but writing this up has made painfully clear to me that I am missing solidity in a number of important intellectual tools, so I'm teaching myself more of the basics that I need -- it might therefore be a few months before I return to this.
I very much enjoyed your paper, it is very rich in ideas and highly stimulating. I wanted to take the time to write some more detailed feedback before the end of this phase but I'll admit that it's still percolating through my brain. At any rate many thanks for that!