Cheating propensity's there. To the imperfect person, there is cheating propensity. He knows that this point, "I'm not very clear," but still he gives some idea, that is cheating. There are so many . . . Darwin's theory, others. "Perhaps," "It may be." Like this. These words are there, used. So what is the use of this "perhaps"? That means imperfect knowledge. "It may be. There is something missing." So how we can believe all this imperfect knowledge?
Now we don't take this knowledge, "perhaps," "maybe." Just like in the śāstra it is said, jalajā nava-lakṣāṇi. There are 900,000's forms of aquatic life, 900,000's. In the Vedas it is said. It doesn't say one more or two less. Nine hundred thousand. Jalajā nava-lakṣāṇi sthāvarā lakṣa-viṁśati kṛmayo rudra-saṅkhyakā (Padma Purāṇa), the living entities. So Veda, that is Vedic knowledge. Veda means knowledge, perfect knowledge.
So this is the process. Our Vedic civilization, all the great ācāryas, teachers, they accept knowledge from the Vedas. Because we accept it Veda is perfect. Sometimes they say that Vedas are also written by human beings. No. It is not written by human being. It is heard. Therefore it is called śruti. So tene brahma hṛdā ādi-kavaye (SB 1.1.1). The knowledge, Vedic knowledge, was first impregnated by the Supreme Lord in the heart of Brahmā.