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An excerpt from "75 Down Blocks - Refining Karate Technique" by Rick Clark
Pareto's 80/20 law is a statistical discovery I think has considerable relevance in the study of the martial arts. In brief, over 100 years ago, Vilfredo Pareto discovered a relationship that manifests itself repeatedly in larger systems.
In its most basic form, Pareto's 80/20 law states you will get 80 percent of your results from 20 percent of your effort. In the business world, for example, it implies you'll get 80 percent of your business from 20 percent of your customers. In the academic world, it implies you'll get probably get 80 percent of your research results from 20 percent of your time spent in the library, or 20 percent of your fieldwork.
When you first encounter this 80/20 rule, you may get the mistaken idea the ratio between effort and results should be exactly 80/20. This is not really the case; the actual percentages vary from case to case. Rather, this ratio should be thought of as a guide, designed to remind you of the disproportionate effect of effort compared to results.
As you begin to recognize the 80/20 patterns that exist around you, the application of Pareto's rule will become apparent in everyday situations - in personal relationships, financial dealings, and national and international events.
In this chapter, I hope to demonstrate a few ways in which you can use the 80/20 rule to help you analyze and improve your martial arts training.
Why Do You Study the Martial Arts?
One immediate application of the 80/20 rule covers the motivation of individuals who begin taking martial arts classes. Over the years I have been involved in the martial arts, I have been curious as to why individuals begin their training. I have also posed this question to many instructors. While I haven't conducted a scientific survey on the issue, I am reasonably confident in my conclusions - out of all the good reasons why someone would start to study the martial arts, most people begin for the purpose of self-defense. In other words, self-defense, which is just a small part of the range of possible reasons, is the primary motivation for the vast majority of individuals who take up the martial arts.
There's a sharp contrast between this perceived need for self-defense skills and the actual incidence of violent crime. For example, if we look at the risk of violence to an individual, it is extremely low. Mattinson (2001) noted that only 3 percent of the adult population of the United Kingdom was a victim of stranger and / or acquaintance violence in 1999. (Of course crime rates will vary from country to country, but I would guess the statistics are relatively consistent in countries that are economically and culturally similar.)
I would guess if we had asked prospective students - especially those interested in studying the martial arts for self-defense what percentage of adults were likely to be a victim of a violent attack, they would have responded with a much higher number.
This type of information can serve as a bit of a reality check. Remember, only 3 percent of adults were victims of violent attack. Another way to look at this is only 3 percent of the population had any real need for self-defense, while the other 97 percent didn't really need self-defense training. Here we have an example of Pareto's law - in reverse! Out of the large percentage of martial arts students motivated by their perceived need for self-defense, only a very few will actually have to deal with violent crimes.
In general, the more you know about the incidence of violent crime, the more likely you'll be able to avoid it. For example, 7 out of 10 violent incidents occurred during the evening or night. To be even more specific, half of the incidents occurred between 6.00pm Friday evening and 6.00am Monday morning. Another way to look at this would be 70 percent of the violent assaults occurred during the evening or night. More than 50 percent of the assaults occurred during only 3 of the 7 days of the week. Clearly, if you want to reduce the likelihood you'll become a victim of a violent assault, you should exercise greater caution during these times.
Developing a Plan of Attack
The rule also comes in handy for planning what facets of a martial arts system to study or emphasize - especially if your primary motivation is self-defense. If you look at the complete range of ways you can be attacked, it seems infinite - which makes planning a defense very difficult. Yet, if you stop to look at the statistics behind this assumption, it turns out there are a limited number of ways in which you are likely to be attacked.
In other words, out of a large number of potential attacks, you are really only likely to encounter a limited number of techniques. If your primary concern is to learn or teach self-defense, you can use this knowledge to determine what kind of attacks you should concentrate on during practice. This allows you to devote a larger portion of your training time to practicing attacks you might reasonably expect to encounter. To put it in terms of Pareto's Law - 80 percent of the attacks will be based on 20 percent of the possible attacking techniques. And it makes sense that 80 percent ( more or less ) of our training time would be spent practicing defenses against that 20 percent.
It's generally accepted that law enforcement officers face more situations requiring skills in self-defense than the average individual. Law enforcement is one of a small number of occupations that subject an individual to greater than average chances of being a victim of a violent assault. If you are a taxi driver, a convenience store clerk, bartender or bouncer you can also expect to be at greater risk. I've chosen to use statistics describing attacks on law enforcement personnel for several reasons, the major one being, in today's world government agencies have collected and compiled data that is readily available.
If you look at the data describing the methods used to assault law enforcement officers, you will be able to generalize (with great care) as to how likely an individual in the larger population is to be assaulted - and therefore which techniques to emphasize in your training.
The Federal Bureau of Investigation (FBI) has collected much of the information needed for such research. I have reproduced a very small amount of their data from Law Enforcement Officers Killed and Assaulted (1978-2000). Data has been summarized to give a total number of law enforcement officers (LEO) killed or assaulted in the United States. It is clear law enforcement officers are more often assaulted with personal weapons - fist, hand, foot, elbow, knee and so on - than any other weapon. (82.73 percent). From these statistics, it is clear the 80/20 rule operates in this context - out of the broad range of possible attacks, a small number of techniques are used in the great majority of incidents.
Federal Bureau of Investigation Law Enforcement Officers Killed and Assaulted 1978-2000
If you are going to design a program to teach law enforcement officers self-defense techniques, it is obvious it's very important to teach skills that correspond to the actual needs of the officers. Given the number of attacks involving "personal weapons" (hands, feet and so on), close-quarter combat techniques designed to meet an empty-handed attacker should play a dominant role in any such training program.
Consider when subjects apply some type of weaponless tactic against a law enforcement officer, they do so with the full knowledge the officer is armed with a firearm. It would also seem logical the suspects would attack the officers most often with percussive techniques (punching, kicking and so on) in an effort to disable the officer as quickly as possible. Yet just the opposite is true: 73.29 percent of the time an officer was grabbed in some manner, as compared to 13.65 percent of the time when an attacked resorted to a percussive technique. Surprising information, but invaluable if you're planning on training for self-defense.
The following chart details the unarmed tactics used when law enforcement officers are attacked.
Suspects' Use of Weaponless Tactics in 7,512 Arrests
Percent of Arrests
|No Tactics Used||7100||94.5154%|
|At Least One Tactic Used||412||5.4846%|
|Types of Tactics|
|Push / Shove||166||16.1793%|
|Bite / Scratch||39||3.8012%|
|Number of Tactics||1,026||13.66%|
|Tactic Where Suspect Grabbed, Pushed or Shoved|
|Push / Shove||166||22.074%|
|Percussive Tactic Used|
From this data, we see the unarmed assaults officers experience most commonly are: spit, grab, arm twist, wrestle, push/shove, hit, kick, bite/scratch, pressure hold, cartoid hold (choke), control hold, or other tactic. To summarize the date for ease of use, we can say there are four main types of attacks one would be most likely to encounter in a self-defense situation. They are:
It seems likely these are the kinds of attacks, probably used in combinations, which you will be confronted with, if you need to defend yourself. This information is invaluable if you study the martial arts for self-defense. Each of these four groups of techniques can be analyzed so you can develop effective self-defense techniques.
For example, if you look at a grab, there are only a few ways an individual can commonly grab you. They are:
Breaking this down even further, the location of the grab will probably be your:
Of course, there are other ways to grab someone - you may find yourself being grabbed by the leg or ankle. But in normal situations this would be somewhat unlikely.
If you look at kicks, it would seem to me you would most likely be attacked with a variation of a front kick, since the front kick is the most natural kick we practice. Roundhouse and side could be encountered, but a jump spinning reverse side kick would have to rank very low on kicks one would expect to encounter.
Could you encounter this kind of attack? Of course - there are enough people today who have taken martial arts lessons to have a working knowledge of this type of kick, and there enough people who have watched martial arts movies to perhaps try this kick. But once again, in a normal situation this would be an unlikely attack.
There are three basic punches you might encounter:
Then, if you were to look at the targets where you might expect to be attacked, there are really only two: the head and torso. I would venture a guess that most of the time the initial punch delivered in a self-defense situation is to the head. Could you reasonably expect a punch to the leg? I don't think so.
In general, it seems prudent to concentrate on practicing defensive tactics against techniques we can reasonably expect to occur.
I would like to re-emphasize the point you can logically expect to encounter only a relatively limited number of kinds of attacks. And I believe the attacking techniques are predictable - they're probably the same today as they were a hundred years ago. We have only a limited number of ways in which we can try to do harm to another person. We have only two hands and two feet, and there are limits as to what we can do with them.
Making the Most of Your 20 Percent
As you become familiar with the 80/20 rule, you will begin to see many more instances where there are clear applications in your life. Time management may not be considered a natural subject for a book on the martial arts. However, how you manage your training time is relevant.
Simply put, martial arts training takes time. I would wager at some point in your life you have said something to the effect of, "I just wish there were more hours to the day." We all sometimes face the problem of fitting everything we want to accomplish into a short 24-hour day.
As an exercise, try to identify the things in your life that give you the most pleasure. You'll probably find only a small part of your day is devoted to those moments. For example, most people work a five day week - with only two days for rest and relaxation. Our work (or school) commitment lasts 7 or 8 hours per day. Factor in travel time of 30 minutes or more each way and you could spend 10 hours or more per day at work. Factor in the 6 to 8 hours of sleep you should be getting, and you end up with only 5 or 6 hours you can call your own.
And, if you are responsible for taking care of others - if, for example you are a parent - you will need to make sure the family's meals are prepared, groceries purchased, cleaning, maintenance, and other chores are completed. By the time all of our time is accounted for we may end up with only a few ours for ourselves. The 80/20 ratio is starting to look more like 90/10!
Time, as you can see, is a precious commodity. It is therefore critical you maximize the way you use your time. The amount of time you have to train, however, may not be as important as how you use that time.
For starters, you can analyze and adapt your training to fit your specific needs - so you get more out of every session. Know your needs, and your interests, and try to make them the focus of your training program.
I would also like to offer you a simple tactic to make sure you get the most out of your development in the martial arts. We all have limits on the amount of time we can spend training. And we can expect to get a limited amount of time from any instructor. They face the same limits on their time - divided by the number of students they're trying to instruct. The primary responsibility for your development in the martial arts is, of course, yours. And your instructor inevitably plays a major role in your development. However, you also interact with many other individuals who can enhance your martial arts training - both in and out of your dojo. Use your time and relationships with other students and colleagues to see that you're all making the most of your precious time.
Develop relationships with peers whom you respect - you can share your training experiences with each other and help each other make the most of your training time. The following are some recommendations:
In the end, you are responsible for making the most of your limited time - of getting the 80 percent effect for your 20 percent of the time. You'll find picking and choosing how you spend your time and whom you spend it with can be a very powerful tool in your development as a martial artist.
I hope the relevance of this discussion of the 80/20 rule is obvious. In the second part of this book, I've taken the list of common attacks from the beginning of this chapter, and tried to show how the down block movement can be applied. Rather than surveying all the different martial arts techniques that can be applied to self-defense, the book describes possible responses to the range of attacks you're most likely to encounter - with defenses against kicks, grabs, and punches - based on variations in one central approach - the down block.
Again, one small part of your martial arts repertoire can be employed in a large number of common self-defense situations. And if you fit your training to that understanding, you should feel like the precious time you have for training is being used more efficiently and effectively.
Reproduced with the permission of the author.
Prof. Rick Clark was born in 1948 and began his life long study of the martial arts in 1962. Prof. Clark is deeply indebted to his first instructor Mr. Wesley Hughes who instilled in him the desire to continue his practice of the martial arts. Mr. Hughes demonstrated outstanding dedication to the martial arts and his desire to pass on his skill and knowledge when many would have give up. Mr. Hughes was in a tragic car accident that left him paralyzed from the neck down, yet he would coach his students from the side of the mat in his wheel chair. This dedication to teaching the martial arts has always impressed and humbled Prof. Clark.
From the beginning of his training in the martial arts Prof. Clark has been exposed to the concept of cross training. In the early days most of the martial arts to be found in the U.S. was Judo. Karate, Tae Kwon Do, and Aikido were practiced in the U.S. but tended to be in the larger cities or perhaps in military bases. At that time martial arts schools were not as numerous as they are today. So when a visitor would come to the Dojo they would be welcomed and asked to participate in the class, and even teach some of their favorite techniques. They would even offer what they could in a short period of time if they practices a different martial art.
This cross fertilization of martial arts offered the genesis of the current system taught by Prof. Clark. Over the years Prof. Clark has had the opportunity to train with a number of instructors who have felt he had the skill and understanding to be ranked in their system. In the past this has led to some confusion with his students because they would question the origin of a particular technique. The late Grand Master Remy Presas (founder of Modern Arnis) offered the advice to Prof. Clark that he should form his own association and name the system of techniques he taught. While this was sound advice, Prof. Clark was reluctant to venture out and name a style of martial arts that he was teaching. However, it became increasingly difficult to separate the individual arts from the blended style he was teaching and after further suggestion by Grand Master Remy Presas and from his students Prof. Clark adopted the name Ao Denkou Jitsu for the style he was teaching and Ao Denkou Kai for the organization. Visit the website: http://www.ao-denkou-kai.org/
Ao Denkou roughly translates as "blue lightning", the lighting is for the "zing" of electricity you feel when a pressure point is struck or manipulated. "Ao" or blue is in respect to Chung Do Kwan (Blue Wave) from which Prof. Clark studied from 1966 under Chung Nak Young.
Ranks Prof. Clark has been awarded are: