Indian Logic: Pramāṇa

• Pramā (प्रमा) — Valid Knowledge: Correct, true knowledge. Knowledge that corresponds to reality.
• Apramā (अप्रमा) — Invalid Knowledge: Incorrect, false knowledge. Knowledge that does not correspond to reality.
• Pramāṇa (प्रमाण) — Means of Valid Knowledge: The instrument or source through which valid knowledge (pramā) is obtained.

Key Concept: Pramāṇa is the means (source), Pramā is the result (valid knowledge).

Example:

• Pramāṇa: Seeing the fire (Perception)
• Pramā: The knowledge that "There is a fire" (Valid knowledge)
• Apramā: Mistaking a rope for a snake (Illusion — Invalid knowledge)

Indian Philosophy recognizes six main means of valid knowledge (Pramāṇas):

• 1. Pratyakṣa (प्रत्यक्ष) — Perception
• 2. Anumāna (अनुमान) — Inference
• 3. Upamāna (उपमान) — Comparison
• 4. Śabda (शब्द) — Verbal Testimony
• 5. Arthāpatti (अर्थापत्ति) — Postulation
• 6. Anupalabdhi (अनुपलब्धि) — Non-apprehension

Pratyakṣa = Knowledge obtained through direct sense perception (seeing, hearing, touching, tasting, smelling).

Key Points:

• Most fundamental and direct source of knowledge
• Involves senses (eyes, ears, skin, tongue, nose)
• Two types:
  • Laukika (Ordinary): Normal sense perception
  • Alaukika (Extraordinary): Yogic/supernatural perception
• Accepted by all Indian philosophical schools

Example: Seeing the fire directly — "I see the fire burning."

Anumāna = Knowledge derived through logical inference — from a known sign (hetu) to the unknown (sādhya).

Key Points:

• Based on logical reasoning from observed to unobserved
• Structure: Pakṣa (Subject) → Hetu (Reason) → Sādhya (Inferred)
• Vyāpti (Invariable Concomitance): The universal relationship between hetu and sādhya
• Accepted by all Indian philosophical schools

Example:

• Seeing smoke on a hill → There is fire on the hill.
• Pakṣa: The hill
• Hetu: Smoke
• Sādhya: Fire
• Vyāpti: Wherever there is smoke, there is fire.

Upamāna = Knowledge through comparison or similarity between two things.

Key Points:

• Knowledge of an unknown object through its similarity to a known object
• Involves analogy and comparison
• Accepted by: Nyāya, Vaiśeṣika, Mīmāṃsā, Vedānta
• Rejected by: Buddhism, Jainism, Sāṃkhya, Yoga

Example:

• A person who has never seen a gavaya (wild ox) is told it is similar to a cow.
• When the person later sees a gavaya, they recognize it by comparison to the cow.

Śabda = Knowledge obtained through words, testimony, or reliable authority (verbal communication).

Key Points:

• Knowledge from trustworthy sources (scriptures, experts, teachers)
• Two types:
  • Vaidika (Scriptural): Vedic/scriptural testimony
  • Laukika (Worldly): Ordinary trustworthy persons
• Accepted by: Nyāya, Mīmāṃsā, Vedānta, Sāṃkhya, Yoga
• Rejected by: Buddhism, Jainism, Vaiśeṣika (as independent pramāṇa)

Example:

• Learning about historical events from a trustworthy history book.
• Knowledge of "The Ganges flows from the Himalayas" from a reliable source.

Arthāpatti = Knowledge derived by postulation — when a fact cannot be explained without postulating another fact.

Key Points:

• Knowledge of one thing is presupposed to explain another
• If observed fact cannot be explained without assuming another fact → That fact is known
• Accepted by: Mīmāṃsā, Vedānta, Vaiśeṣika (some accept)
• Rejected by: Nyāya, Buddhism, Jainism, Sāṃkhya, Yoga

Example:

• Observing that a person who is known to be alive is not found in the house → Postulate that the person has gone outside.
• "Devadatta is fat. He does not eat during the day. Therefore, he must eat at night."

Anupalabdhi = Knowledge through non-perception or absence — knowing that something does not exist.

Key Points:

• Knowledge of the absence of something because it is not perceived
• Direct perception of non-existence
• Accepted by: Mīmāṃsā, Vedānta (some schools)
• Rejected by: Nyāya, Vaiśeṣika, Buddhism, Jainism, Sāṃkhya, Yoga

Example:

• "There is no pot on the table."
• Knowing the absence of a pot because one does not see it.

• Trap 1: Pramāṇa = Pramā → ❌ Pramāṇa is the means; Pramā is the result (valid knowledge).
• Trap 2: Apramā = invalid means → ❌ Apramā is invalid knowledge, not invalid means.
• Trap 3: All schools accept all six pramāṇas → ❌ Different schools accept different numbers (2 to 6).
• Trap 4: Pratyakṣa = only visual perception → ❌ It includes all five senses.
• Trap 5: Anumāna = only deductive → ❌ It includes both deductive and inductive inference.
• Trap 6: Upamāna = same as analogy → ❌ It is similarity/comparison specifically.
• Trap 7: Śabda = only Vedic scripture → ❌ It includes both scriptural and worldly testimony.
• Trap 8: Anupalabdhi = absence of perception → ❌ It is the knowledge of absence, not just the absence itself.

Seeing a fire directly is an example of which pramāṇa?

• A. Anumāna
• B. Pratyakṣa
• C. Upamāna
• D. Śabda

Explanation: Direct sensory perception (seeing) is Pratyakṣa.

Inferring fire from smoke is an example of which pramāṇa?

• A. Pratyakṣa
• B. Anumāna
• C. Upamāna
• D. Arthāpatti

Explanation: Inference from a sign (smoke) to the inferred (fire) is Anumāna.

Recognizing a gavaya by comparing it to a cow is an example of which pramāṇa?

• A. Pratyakṣa
• B. Anumāna
• C. Upamāna
• D. Śabda

Explanation: Knowledge through comparison/similarity is Upamāna.

Which school accepts all six pramāṇas?

• A. Nyāya
• B. Sāṃkhya
• C. Mīmāṃsā
• D. Buddhism

Explanation: Mīmāṃsā accepts all six pramāṇas: Pratyakṣa, Anumāna, Upamāna, Śabda, Arthāpatti, Anupalabdhi.

"Devadatta is fat. He does not eat during the day. Therefore, he eats at night." This is an example of:

• A. Anumāna
• B. Arthāpatti
• C. Upamāna
• D. Anupalabdhi

Explanation: Postulation — the observed fact (fatness) is explained by postulating eating at night.

"There is no pot on the table" is an example of which pramāṇa?

• A. Pratyakṣa
• B. Anumāna
• C. Anupalabdhi
• D. Śabda

Explanation: Knowledge of absence (non-perception) is Anupalabdhi.

Which pramāṇa is accepted by all Indian philosophical schools?

• A. Upamāna
• B. Śabda
• C. Pratyakṣa and Anumāna
• D. Arthāpatti

Explanation: Pratyakṣa (Perception) and Anumāna (Inference) are accepted by all schools.

Six Pramāṇas:

• Pratyakṣa: Perception (All schools)
• Anumāna: Inference (All schools)
• Upamāna: Comparison (Nyāya, Vaiśeṣika, Mīmāṃsā, Vedānta)
• Śabda: Verbal Testimony (Nyāya, Mīmāṃsā, Vedānta, Sāṃkhya, Yoga)
• Arthāpatti: Postulation (Mīmāṃsā, Vedānta)
• Anupalabdhi: Non-apprehension (Mīmāṃsā, Vedānta)

Schools & Count:

• Nyāya: 4 (Pratyakṣa, Anumāna, Upamāna, Śabda)
• Vaiśeṣika: 2 (Pratyakṣa, Anumāna)
• Sāṃkhya/Yoga/Jainism: 3
• Mīmāṃsā/Vedānta: 6 (All)
• Buddhism: 2 (Pratyakṣa, Anumāna)

Exam Formula:

UGC NET में Indian Logic के questions pramāṇa identification, school matching, और application पर based होते हैं।