On a factory assembly line, each worker knows how to do one job very well but, in most cases, doesn't know how to do the other jobs. Take a shoe factory for example. There may be 100 steps in making a shoe. Each worker knows one or two steps, but none of them know how to make an entire shoe. They know how to do their particular part, but they don't know why it is important to the finished product. The factory put out many pairs of shoes, but the quality of those shoes is nowhere near that of a pair of shoes carefully and lovingly made by a cobbler who knows every step of the process, knows how each step affects the others, and knows if the finished product is correct. 
    To a large extent, we are seeing the same thing happening in public education. Specialized teaches teach specific subjects and teach the kids to pass the required state and federal exams, but they don't teach them critical or creative thinking. They don't teach them to emphasize what they are good at, on the contrary, every kid is expected to learn exactly the same thing regardless of what they are good at or what they like doing.
    In spiritual training, we are seeing a form of this as well. Spiritual, or self-help gurus grab one thing from one spiritual discipline, another tool or concept from another, and so on, then through it all together and consider it a spiritual school. The students who come out of those schools are much like those factory shoes: they have probably learned something, maybe improved their self-esteem, but they haven't really become spiritual.