spam classification breaker

[Robin Becker]

In article <mailman.1276.1076024613.12720.python-list at python.org>, Tim
Peters <tim.one at comcast.net> writes
>[Robin Becker]
>> .... are you asserting that spammers don't have access to the pdf that
>> users are filtering?
>
>Sorry, I couldn't make sense of that question.
>
>> Each filter may be unique, but they can be biassed. --
>
....OK I guess I'm trying to get at the following hand waving argument.
Since most people agree about what is ham or spam there must be a
general recognizer for each. My question is then, is  whether it's
possible to define a camouflage mechanism that turns ham into spam or
vice versa. Most people reading a newspaper article would classify it as
spam. If I insert a short  ad v ert into the middle the quick 
scan process is gone, but     I might be able if everything is
set up correctly     to get   a forbidden word
set into the text in plain si g ht even
though it's specifically   fo r bidden by your
all singing and dancing     B a yesian analyser. It is well known
that word/space runs are very distracting which is why printers
have long tried to eliminate them.

I don't believe a small cost will kill all spam; every day I get large
amounts of paper adverts, flyers, business cards etc etc. These have
real cost, but presumably are sufficiently market oriented that they pay
for themselves. Putting a cost on email will just reduce the volume of
spam.
-- 
Robin Becker