Prabhupāda: (aside) Hare Kṛṣṇa. Jaya. (break) . . . scientist. Tad viddhi praṇipātena (BG 4.34).
Dr. Patel: But he did not the paripraśnena sevayā. I do it.
Prabhupāda: No, he thinks not yet fit to make paripraśna.
Dr. Patel: I do it on India.
Prabhupāda: That is. That is scientist. He thinks himself not fit to make any question. Tad viddhi praṇipātena paripraśnena (BG 4.34). When the praṇipāta is sufficiently mature, then he can make paripraśna—accompanied by sevā. Otherwise paripraśna is a waste of time. According to our Vedic system, we should not make any question to any person whose answer I cannot accept toto. Then I shall. Otherwise no use of wasting time. Praṇipāta means that you are accepting that, "Here I have come. His answer will be complete." No further question. But if there is little doubt, he can submissively make question. Just like Arjuna made question to Kṛṣṇa that "You say millions of years ago You spoke this science to . . ."
Dr. Patel: Vivasvān.
Prabhupāda: Yes. "But You are of my age. How I can accept this?" And immediately answer was that "Both of us were present. You have forgotten; I have not forgotten." Bās. Accept it. He did not challenge, "How is that? I have forgotten? You did not forget?" And that is nonsense. That is nonsense.
Dr. Patel: Śādhi māṁ tvāṁ prapannam (BG 2.7).
Prabhupāda: Yes. As soon as he questions like that, "How is that You have not forgotten? I have forgotten?" it is not good. Then he is not fit for making question. He should not have made question.