While I have no vested interest in the topic one way or another I have  
literally deleted more than 200 messages over the past two days on this subject  
which has taken up precious mailbox space and my time.  I thought we were  
discussing pens here and not the PCA and its strengths or weaknesses.  I  think 
that this calls for Tom to step in and moderate a little.  While this  may be the 
proper forum, some of us are indifferent about the subject and  are getting 
fatigued at the "you said" - "I said" approach and would rather get  back to 
the main subject matter
 
- Dan Dobrjanskyj