All of these yogas, they are paths. There is an interrelationship. They help each other, but there is also an independent nature of each the they conceive of the spiritual problem in a unique way and then they an answer. The path of knowledge says the problem is ignorance of our real nature. If only you would know what you truly are. That is the path of knowledge. Gitvic shape is the problem. Gitacograta is the method. Very important insit. It's a different insight from what we are talking about right now, but very important.