Devotee: His supposition of being able to control the environment completely is imperfect, because he can't control the environment perfectly. Even if he builds his child a box, what if there is a fire in the house and the box burns down? How he can control that environment?
Śyāmasundara: Right now, the level of their experiments are relatively small. For instance, they have created teaching machines where a child is put in front of the machine and a question is asked, and if the child answers it correctly he gets the reward.
Prabhupāda: Another nonsense. The thing is that the Vedic conception of raising children, brahmācārya, that system is perfect.
Śyāmasundara: Not by machine.
Prabhupāda: No, this is (indistinct). We are not machines.
Śyāmasundara: No. But he says that when the answer is given correctly by the child, then he is rewarded by him.
Prabhupāda: The answers and questions are already there. That is (indistinct). Just like we say that tad vijñānārthaṁ sa gurum evābhigacchet (MU 1.2.12). There is question and answer. Therefore in order to understand the transcendental science, we must go to guru, gurum eva abhigacchet. And then what is the symptom of guru? Samit-pāṇiḥ śrotriyaṁ brahma-niṣṭham. Guru means who has learned knowledge by the paramparā system. Śrotriyaṁ brahma. The result is that he is perfectly a devotee.