Precision refers to being detail oriented in the learning process of the techniques, concepts and principles. A novice student develops their skill of precision by doing each technique slowly and taking the time to discover what makes it tick.  Just doing techniques without exercising the mind to acquire the
self disciplined skills necessary to accelerate ones learning, understanding and application will slow up a person's advancement.  At best it will slow up the learning process.  At worst, it will cause a person to look for the wrong elements within a technique and at some point to have to take the time to undo the damage that has been done and then relearn it again the proper way. The most important rule that a novice student must learn is patience. Learning is one thing, understand is an entirely different matter. True understanding takes time. There is no substitute for time.  Patience is what teaches us this point.  Precision is the key element and the most important concept a novice student can master. 

Control is precision applied in a safe and effective manner. A beginning student who has progressed past the novice level of training works to develop their control.  If a technique is done quickly, but has little or no control, then people get injured, bad habits get reinforced, and precision gets lost. Without precision lighting the way, control gets lost in the dark.

Timing comes into play at the intermediate level of Advanced Jujitsu Concepts.   Timing is a combination of precision and control with a little something extra thrown in.  At the intermediate levels of training a person's precision becomes keener, their control continues to improve greatly as the rhythms of the system begin to solidify.  The system takes on a fresh new perspective as you look back at what you have learned previously with a new set of eyes.

Speed and power are advanced elements incorporated in the system for students who have achieved a higher level of understanding.  An advanced level student has developed a wise and informed sense of precision in the way they look at their techniques, the situations they are applied in, and the application of the governing principles and concepts of the system.  Their control and timing have developed to a point where speed and power enhance what they have already effectively developed, rather than get in their way.  They change in mental strength, in attitude, and in confidence. They have become the total package, the total martial artist.  They have gained the wisdom to finally realize that they have not achieved the highest level attainable, they have simply acquired a dazzling array of tools to apply to their future training and understanding.