Articles | YMAA

I.M.O.P. Principle—Intent, Means, Opportunity and Preclusion
October 6, 2014
How do you know when it is legal to get physical with an adversary? Learn the I.M.O.P. (Intent, Means, Opportunity, and Preclusion) principle. All four of these criteria must be met before you have a good case for taking action. If one or more of these conditions are absent, you are on shaky legal ground.
Never Hit A Girl…Unless She's Armed
September 29, 2014
Sun Tzu and Miyamoto Musashi made no distinctions regarding gender. To them all adversaries were defined as combatants. In today's world, distinctions of gender are made by friends, family, police, and the courts. The role of combatant is, oftentimes, secondary. While experienced bouncers, bodyguards, law enforcement officers, soldiers, jail guards, and martial artists know that women can be just as dangerous, or possibly even more so than men, (such as instinctively going for the eyes during an attack) the courts don't often see it that way.
Modern Trends: Reality-based Martial Arts
September 15, 2014
The rise in recent years of so-called ‘reality’ based martial arts reminds me of other great scams committed against the general public, like bottled water, and who can forget the panic that gripped the world in the 1990s over the Y2K dilemma that was supposedly going to see aeroplanes fall from the sky and shut down every computer on the entire planet.
Account for Adrenaline
September 1, 2014
When I took a defensive handgun course several years ago, I was taught to train for handling the survival-stress reaction commonly associated with actual combat. To simulate the reaction, we had to do as many pushups as we could as fast as we could for one minute.
About the Sword
July 14, 2014
Many martial artists, even those who have studied Chinese martial arts for many years, still have a number of questions about the structure, use, history, and geographical background of the Chinese straight sword (jian).
Common Sources of Knowledge About Violence - March 31, 2014
We are, all of us, both teachers and students. As teachers, we give our students information. As students, we learn from our teachers. The teachers give us knowledge. This knowledge came from somewhere, from one of four sources.
The Victim Interview - February 17, 2014
I was parked alongside a major street in downtown Seattle. My hands were full of boxes and the mid-afternoon sun was glaring in my face, making it hard to see despite my polarized glasses, so it took a couple tries to get my key into the lock. I awkwardly dragged the door open, nearly dropping some of my packages, and began shoving my purchases in to the car.
Teaching Joint Locks - February 3, 2014
About 2003, the training unit at my old agency got some pretty disturbing numbers. Assaults against staff and hospitalizations had increased dramatically. The programs taught at the academy and approved by our agency weren't cutting it. The Training Unit tasked a few of us to redesign the Defensive Tactics program from the ground up.