Defeasible and Ampliative Reasoning: same-same but
                     different.

                                 Michael J. Maher

                 School of Engineering and Information Technology
                     University of New South Wales, Canberra
                        Email: m.maher@adfa.edu.au



  Abstract. Defeasible and ampliative reasoning are two sides of the same coin.
  They use similar techniques, but for very different purposes. This talk will explore
  these similarities and differences.