That they do, FRiend. That they do.
My friends at certain computer companies confirm what you say is the truth.
I may have worked with some of your friends in an advisory capacity. :o)
I guess we'll just have to learn to screw with "semantic forests".
Have a look at the patents filed by NSA people on the subject. Makes it difficult to insert chaff that can be convincingly taken for the genuine article.
Perhaps NSA could design a 100% foolproof spam filter. Now that would be cool.