PART THREE
Stops, Filters, and Exits
In this part of the book, we will look at various ways of adding stops and exits to
our entry techniques. If the preceding chapters were basically a demonstration of
how system development is more of an intuitive art form than a science, where you
rely more on your own gut feel and mental picture of what you want the system to
do, this part will be more scientific in nature. Here we only rely on what the hard
cold figures tell us, and we will be as precise as possible, without losing track of
the fact that the system needs to work as well in the future as it has in the past.
If you compare the final system with a painting representing reality, in Part
2, we applied the paint in broad strokes and perhaps even in a cubistic fashion,
leaving a lot to the interpreter to figure out what we want the system to represent
and do. In this part, we use a much smaller brush and try to paint in as much detail
as possible and in as realistic a fashion as possible, without forgetting that we can
never be 100 percent scientific or precise; we always leave a little piece of artistic
freedom in there. Otherwise, the system would work perfectly in the past, but not
at all in the future. Although we strive to be as precise as possible, it is that little
piece of artistic freedom and how we interpret things that sets us apart from other
painters (system builders) and assures our future success.Copyright 2003 by The McGraw-Hill Companies, Inc. Click Here for Terms of Use.