All Self-Protection Methodologies are essentially Problem Solving Systems whose solution is to deprive an aggressor of his or her Intent and/or Means and/or Opportunity to do harm. The Point of View of the Problem Solver influences which System he or she will choose.
A Simple System is has few Considerations, and therefore applies to limited situations.
The Considerations are ALL of the possibilities allowed for by the System relating to all parties and environment involved. For example, assume a System that uses a punch to the head as a response to an aggressor’s aggression and/or attack. The intended Solution is the incapacitation the Aggressor which takes away his means to do harm. Do the Outcomes include one, a few, some, most, or all of the following?
A punch that has minimal effect on the Aggressor.