Jñānam means knowledge. And vijñānam means particular knowledge. Just like in scientific word there are knowledge and scientific knowledge, or theoretical knowledge and experimental knowledge—two kinds of knowledge. Science . . . In the field of scientific knowledge there are things, just like observation and experiment. Things are going on. The scientists are observing that "These things is being done." Now there are so many observation, atomic observation; proton, neutron, they are observing. And now, when that observation is complete, when they are put into experimental knowledge, that is called vijñānam. So Kṛṣṇa says that "I shall explain to you jñānam, theoretical knowledge, with practical experiment." Not that you have to accept this knowledge blindly. Practical experiment. Jñānaṁ te 'haṁ pravakṣyāmy anasū . . . Jñānaṁ vijñāna-sahitam.
Just like the controversy is . . . The modern scientists, they say that "Life is generated from matter." We are protesting. We are protesting because . . . We are not scientists, of course, but we are scientists so far our knowledge is concerned. Because here it is said . . . Kṛṣṇa says, jñānaṁ te 'haṁ sa-vijñānam (BG 7.2), so Kṛṣṇa is the authority. He is the opulent, most opulent, the wisest. So if we receive from Him knowledge, then that is perfect. I may not be perfect, but the knowledge I receive from Kṛṣṇa, that is perfect. That is perfect.