Knowledge, the object to be known, and the knower – threefold is the persuasion for action. Instrument of action, action (itself) and the actor – these three form the essence of activity.
Krishna enters into the subtleties of the mind’s working. You cannot experiment with the mind as you do with the objects of the world. Yet, it causes all our activities, observations and findings. So, an understanding of the mind, its working, and the effects it produces, is indispensable. Krishna makes the reader probe into the mind by analyzing how the inner personality works.
In any knowing process, there are three constituents – the object to be known, the subject knower and the outcome called knowledge. Interaction between the knowing person and the knowable is what results in knowledge.
Equally so, the instruments for action, the processes these effect, and the actor wielding the instruments, are the three to shape the action-process and its outcome. By reflecting on these subtleties, mind’s applicational ability grows making it more and more dexterous and effective!