Audience Types

I don't think that I have really ever necessarily thought in detail about the different types of audiences and how they should be addressed differently from each other.  I think I have just automatically altered my approach but not really taken thought as to why.  The way the textbook broke the audience down into different categories was interesting and quite helpful.  Showing how each audience type had similarities and differences in relation to each other was something I would not have taken into consideration on my own.  I like how the text broke down within each category not just what their opinion of the subject was but also what their opinion of it was.  However, when writing a speech, it is not always necessarily known whether or not the audience is educated on the subject matter or not and if they are educated about it, their viewpoint may not be known.  To cover this approach, I think it would often require generalizing the speech toward the assumption that you are speaking to a divided audience.