Bloodstain pattern analysis can range from
the simple to the complex. The trails of blood in a crime scene or castoff
blood patterns are reasonably straightforward and understandable. Determining
areas of convergence and origin employing string methods or trigonometric
methodologies are more complex and call for a trained specialist. The
scientific analysis of bloodstain patterns requires extensive training and
experience, which goes beyond the normal crime scene process. Furthermore,
there are a number of different definitions and opinions by various experts in
the field, which tend to confuse the average investigator (Vernon).