Return of the Revenge of the Return of the Compression Schmuck

Aug 13 2010 Published by under Bad Software

Well, folks, this one is going to be boring for most of you. But the
compression jackass, Jules "Julie-baby-dumbass" Gilbert has been repeatedly
bugging me. And today, he replied to my latest "fuck off and stop sending me
mail" with a long-winded proselytizing response in which he requested that I
be courteous and not publicize the discussion of his "work".

Fuck that

The entire correspondence is below.

Before I get to it: the short summary of what Jules is doing
is munging a file in a way that makes it amenable to recompression. In
the classic sense, this is removing a trivial bit of information from the
file, which thus allows is to be re-compressed just a tiny bit
more.

The catch is, of course, you can't un-compress it without re-introducing
the information that you removed. In his case, you need to repeatedly
un-compress, un-munge, un-compress, un-munge, and so on -
exactly the right number of times. From some of his emails, he
does this hundreds to thousands of times.

You can't un-compress his stuff without knowing how many times the compressor
ran. And how many times is that? Well, gosh, to know that, you need to know
some extra information. Anyone want to take a bet on what the
relationship is between the amount of additional compression he can get, and
the number of repetitions of his system? Anyone?

Ok. On to the transcript.

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