Here all the verses of the Gītā are reduced to just two verses by Kṛṣṇa.

He straightaway addresses and completes the root pattern where Arjuna is stuck, that is in his need for name and fame or rajas.

• A man who is centered on satva, goodness, who has neither greed nor lethargy but a neutral attitude, will work out of compassion.
• A man who is centered on rajas will work only for name and fame.
• A man who is centered on tamas, lethargy, will work only for sensual pleasures.

Duryodhana works only through tamas, which explains his cruel and gross behavior. Dharmarāja Yudhiṣṭira works on satva, out of compassion. Here Arjuna is centered on rajas, therefore he is working only for name and fame. This is why Kṛṣṇa asks him not to work in this way as it would ultimately bring Arjuna a bad name, akīrti karam arjuna. This is how He straightaway puts His hand on the tumor, the tumor that is the subtle root pattern working within Arjuna.

All Western philosophies begin with logical analysis and end with the conclusion. All Eastern processes begin with the conclusion and then give the analysis.

Fortunately for us, Arjuna is not intelligent enough. Or rather, he acts as if he is not intelligent enough to understand these words. He has lived with Kṛṣṇa for more than thirty years in close friendship and must have intelligence. He puts his questions and doubts not for himself but for enriching the future generations and for the whole of humankind.

Most of the time our problems are very simple. It is we who complicate them. Our patterns are not as big as we think they are. When we verbalize, analyze, label and associate with them as impossibilities, we have created a whole new problem that had not existed earlier in our being.

You have only one mind. You can either use it to enrich yourself in solving the problem, or it will naturally enslave you in creating more problems. Understand that if you are not solving your existing problems, you will be creating more problems. At the level of the mind, there is no position of simply standing, no status quo—you either climb or fall, you are either in space of possible or impossible!

Here Kṛṣṇa straightaway addresses Arjuna’s root pattern. Kṛṣṇa is not creating any philosophy but gives the answer straightaway in just one line. However, as Arjuna is not mature enough because of his root pattern, he has to be given an intellectual explanation of his possibility.

All Western philosophies begin with logical analysis and end with the conclusion. All Eastern processes begin with the conclusion and then give the analysis. Eastern masters are compassionate. They first give us the option of grasping the solution, if we have the intelligence. They expect us to transform with just the trust in them. If we don’t have this qualification of grasping and trusting, they have no other option but to go into detailed explanation, they start the regular process.

Here Kṛṣṇa tries the first method of sudden enlightenment, the immediate liberation, the ultimate possibility but Arjuna is not mature enough to receive it or comprehend it. So Kṛṣṇa now starts the process of explaining it to him step- by-step.

source: chapter 2, Bhagavadgita Decoded