Finding the Cure for Today's Social Ills
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without argument. That is the principle followed by scholars. If you can substantiate your statements by quotations from the  Vedas , then they are accepted. You are not required to substantiate them in other ways. There are different kinds of  pramāṇas , or evidences. Proof by Vedic quotation is called  śruti-pramāṇa . As in the legal court if you can give statements from the law book your statement is accepted, so all statements you give, if supported by  śruti-pramāṇas , are accepted by scholars. I think you know the  Vedas  are known as  śrutis .
Prof. Kotovsky:  Yes.
Śrīla Prabhupāda:   śruti-smṛti-purāṇādi-pañcarātra-vidhiṁ vinā aikāntikī harer bhaktir utpātāyaiva kalpate  
  [ Brahma-yāmala ]
Any system we accept must be supported by evidences of  śruti ,  smṛti , the  Purāṇas , and  Pañcarātra . That which is not proved by these  pramāṇas  is a disturbance.
Prof. Kotovsky:  Could I just say one thing? What is in the  Vedas  could also have been proved in a scientific way. Today, suppose there is a scientific laboratory. What is said by that lab is true. That it is true you accept, without going into the propriety of it. Suppose you have a scientific workshop or institution; if this workshop or scientific institution says, "This is not good," the general body will take it for granted: "Yes. The scientific body has said so, so it is understood."
Śrīla Prabhupāda:  Similarly, Vedic authoritative statements are accepted by the  ācāryas  [great teachers]. India is governed by the  ācāryas —Rāmānujācārya, Madhvācārya, Śaṅkarācārya. They accept the  Vedas , and their followers accept them. The benefit is that I do not waste my time to research whether cow dung is pure or impure; rather, because it is stated in the  Vedas  to be pure, I accept it. I save my time by accepting the  śruti-pramāṇa . In that way there are different statements in the  Vedas  for sociology and politics or anything, for  veda  means "knowledge."
sarvasya cāham hṛdi sanniviṣṭo 
  mattaḥ smṛtir jñānam apohanam ca 
  vedaiś ca sarvair aham eva vedyo 
  vedānta-kṛd veda-vid eva cāham  
  [Bg. 15.15]