B.G 2.11
śrībhagavānuvāca। aśōcyānanvaśōcastvaṁ prajñāvādāṁśca bhāṣasē। gatāsūnagatāsūṁśca nānuśōcanti paṇḍitāḥ ॥ 2-11॥
Sri Bhagavan said: You grieve for those that should not be grieved for and speak seemingly wise words reasoned in your own way. The wise grieve neither for the dead nor for the living.
Gīta Bhāshya 2.11
The wise grieve neither for the dead nor for the living
prajñāvādān svamanīṣōtthavacanāni। kathamaśōcyāḥ? gatāsūn ॥11 ॥
Here 'prajñāvādān' means thoughts based on one's own intelligence. Why should not one worry? - the wise grieve neither for the dead nor for the living.
Gīta Tātparya 2.11
The argument opposed to knowledgeable is 'prajna-avāda'.
prakarṣēṇa jānantīti prajñāḥ tadavādaḥ prajñāvādaḥ। prājñamataviruddhavādaṁ vadasi। katham? gatāsūn ॥ 11 ॥
The 'Jnānins' are those who can grasp and understand well. The argument opposed to them is 'prajñāvāda', (So, Krishna says) you are stating an opinion that is opposed to Jnānins. Why? Answer is given by 'gatāsūn'.