Titus and Philemon are also in Paul's letters that he wrote while in prison. Both of these letters are incredibly short. Titus seems to be giving guidelines on how to be an elder and how to "Do what is good." Philemon takes a different approach and is more of an informative letter as to a messenger who is being sent from Paul.
I think that the Titus 3: 9 definitely applies to class discussion about what different scholars think. In class it seems that we continually are discussing that the scholars consensus is... But in this verse it says "But avoid foolish controversies and genealogies and arguments and quarrels about the law..." I think that in some light the scholar's discrepancies could be seen unnecessary. And my first instinct when I read this verse agreed with the unnecessary discrepancies between scholars. Then I got to thinking about how we learn and do research. We come to differences in something and decide to take it and learn with it...We wouldn't know anything about the bible if we had simply accepted the original person's information and never questioned its validity. I think that this is a cool verse to have, but can be misinterpreted.