1_Dear_IJAHP_ReaderEnrique_Dec23_p_90 IJAHP PREFACE: Mu/Words from the Editor-in-Chief         International Journal of the Analytic Hierarchy Process Vol. 3 Issue 2 2011 ISSN 1936-6744                                        December  2011   Dear  IJAHP  Reader:   With  this  issue,  IJAHP  celebrates  its  third  year  of  publication.  We  have  been  very  active   during  this  period  and  have  started  publishing  special  issues;  the  first  one  was  dedicated   to  the  status  of  AHP  practice  in  Brazil  and  we  are  currently  working  on  another  special   issue  on  the  topic  of  sustainability,  scheduled  for  spring  2012,  thanks  to  the  initiative  of   Fabio  DeFelice  and  the  valuable  assistance  of  Antonella  Petrillo.  More  such  special   issues  are  planned  for  the  future.  A  new  section  called  News  and  Events  has  been  added   to  keep  our  IJAHP  community  abreast  of  events  of  interest  and  here  you  will  find  Fabio   DeFelice’s  report  on  the  success  of  the  ISAHP  2011  conference  in  June  in  Sorrento,  Italy,   and  news  about  Jagiellonian  University  of  Krakow,  Poland,  awarding  Thomas  Saaty  an   honorary  doctorate.    The  current  issue  has  five  articles,  including  the  last  installment  on   the  topic  of  the  eigenvectors  of  the  AHP/ANP  by  Stan  Lipovetsky  and  an  essay  on  The   Serious  Omission  of  Comparisons  from  Aristotle’s  Laws  of  Thought  by  Thomas  Saaty.     Enjoy  the  Holiday  Issue!   Enrique  Mu   IJAHP  Editor-­‐in-­‐Chief           Rob Typewritten Text Rob Typewritten Text http://dx.doi.org/10.13033/ijahp.v3i2.59