>>16
Change the subject. Usually in connection with one of the other derailing ploys, find a way to side-track the discussion with abrasive or controversial comments in hopes of turning attention to a new, more manageable topic. This works especially well with companions who can "argue" with you over the new topic and polarize the discussion arena in order to avoid discussing more key issues.
Emotionalize, Antagonize, and Goad Opponents. If you can't do anything else, chide and taunt your opponents and draw them into emotional responses which will tend to make them look foolish and overly motivated, and generally render their material somewhat less coherent. Not only will you avoid discussing the issues in the first instance, but even if their emotional response addresses the issue, you can further avoid the issues by then focusing on how "sensitive they are to criticism".