I agree, to some extent, that there are teachers that intentionally keep "secrets" to inhibit some peoples progress, however I do not believe that this is the intention of the majority of teachers. I think the vast majority of teachers who fail to pass on these methods of training simply don't know them or have chosen to dismiss them or they don't see the connection ect. Fortunately, I have not had to deal with this sort of thing (that I know of -or not know of
). If anything I have always had way more information than I could process.