Knowing how to sharpen the limbic tool is the first step in acquiring an effective technique. The second step is to practice it until the skill kicks in automatically.
For example its easy enough to learn how to use the shoulder to bump your practice partner off balance. But how do you use the shoulder to deliver a short, sharp force that can injure your opponent rather than just knock him off balance harmlessly.
This is where the transmission from teacher to student plays a critical role. A traditional teacher will not simply teach any normal student or even a disciple how to cultivate such power. Its like giving a sharpened knife to another person. Would you knowingly give a weapon to a person that you cannot trust or even barely trust?
Of course not, right? This is the sensible thing to do.
In this sense you can say that knowledge is power and not to be readily dispensed without careful assessment of the student’s character. Now you can understand better why traditional teachers are so careful with whom they teach the secrets to. Its not always about the money. Trust really is the issue here. Once the genie is out of the lamp there is no going back.