Mechanical Daytrading

["Ishmael Jonah Smith" <ishmael_j_smith@xxxxxxxxxxxx>]

Over the last year or so, there have been many great posts to this 
list on the subject of daytrading the S&P.  I think I speak for 
many others on this list when I express my appreciation to all 
the daytraders who have shared their thoughts here.  

Let me bring up one point I am curious about with the hopes it might 
start an interesting thread:  are there any successful S&P 
daytraders who use a 100% mechanical system?  If I recall correctly,
all of those who have described their techniques have indicated that
they use some level of discretionary judgement.  Some, like Tom Cathey
in his post of today, describe themselves as largely discretionary.
Is the successful mechanical S&P daytrader just an oxymoron (like
congressional ethics)? 

 Regards,

 Ishmael