Śyāmasundara: This can be proven. This can be tested, if someone's cheating or not cheating can be tested on a factual basis. Similarly, this science can be tested...
Prabhupāda: Observation and experiment.
Śyāmasundara: Whether it has a good effect or it has a bad effect.
Prabhupāda: Yes. So similarly, just like this Kṛṣṇa consciousness movement is coming down from Kṛṣṇa through the chain of disciplic succession. So if it is actually given in the exact definition, that process, it is effective. And it is actually being experienced that it is effective.
Śyāmasundara: Just like this medicine...
Dr. Weir: Which may not, unfortunately... This is the danger of analogy. This medicine may work in ninety-nine cases out of a hundred and the hundredth one could kill the poor chap. Now you can't say that the physician was cheating in prescribing for the hundredth chap because he just didn't know.
Mensa Member: (indistinct) on the other hand the other medicine might have worked.
Dr. Weir: Hmmm.
Mensa Member: It is very dangerous. Analogy's awfully dangerous.
Dr. Weir: But then some people have to have a concrete example or they haven't any (indistinct) It's when you analyze the analogy that you can see it's difficult...
Prabhupāda: No, analogy, of course, is not always the perfect method. Analogy means the greatest number of similar points. That is analogy. Perfection of analogy is there when there is the greatest number of similar points. But we give sometimes the analogy as we understand it, but so far this Kṛṣṇa consciousness movement, there is no need of analogy. It is accepted as truth and Kṛṣṇa is accepted as the Supreme Personality of Godhead and whatever He says is truth. There is no mistake and if we carry that message there is no mistake.