| 
 Bill,  
  
To be sure, certain chart patterns are fairly easy to 
identify by eye (e.g., triangles) although depending on their size perhaps not 
in all instances.  However, this is certainly not the case for more complex 
patterns.  As a result, for example, both Market Warrior and 
Ensign provide automatic detection of Fibonacci patterns which have multiple 
boundary conditions that nobody will be able to confirm by eye unless 
Fibonacci himself calibrated their eyeballs which is a prohibitively expensive 
procedure ;-) 
  
Bill 
  
  ----- Original Message -----  
  
  
  Sent: Tuesday, August 19, 2008 3:55 
  PM 
  Subject: [amibroker] Re: 'Rule Based' 
  versus 'Discretionary' trading... 
  
  There is some confusion created by the title you chose for 
  this thread, it implies discretionary traders don't follow rules. That 
  is false.
  Normally the compliment of discretionary trading is called 
  mechanical system trading not "rule based" trading.
  It is more 
  reflective of the difference between the 2 groups.
  Typically 
  discretionary traders trade what they see on a chart. What that usually 
  means is the discretionary trader evaluates the state of the market and 
  selects a set of trading rules most appropriate for current conditions. 
  Mechanical system traders use the same set of rules for all market 
  conditions.
  The reason why discretionary traders need a flexible 
  graphical interface is because they need to have information presented to 
  them in a way that is easiest for them to interpret. That is different 
  for everybody.
  I think it is possible to create an adaptive 
  mechanical trading system but IMO, it will require a large AI component. 
  Also, there is little incentive to program patterns when they can easily be 
  identified on a chart with a 
glance.
  Bill
 
  
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