Pramana

A means of valid knowledge — the instruments by which something is established as known. Classical Vedanta accepts six: perception, inference, comparison, testimony, postulation, non-apprehension.

Overview

Pramana is the epistemological backbone of the Indian darshanas. Where Western philosophy usually debates what counts as knowledge, Indian philosophy asks through what channel does knowledge arrive. The standard Advaitic list:

• pratyaksha — direct perception (via the senses)
• anumana — inference (from a sign to what it signifies; the smoke-to-fire argument)
• upamana — comparison (knowing a buffalo is “like a cow” when you’ve never seen one)
• shabda / shabda-pramana — verbal testimony, especially scriptural
• arthapatti — postulation (the man is alive but absent from home, therefore he is elsewhere)
• anupalabdhi — non-apprehension (the proof of the pot’s absence is my not seeing it)

Different schools accept different subsets (Nyaya recognizes four, Mimamsa six, etc.). Advaita accepts all six because its analysis of Brahman specifically needs anupalabdhi to handle absence as evidence.

Where this matters for 2.18: Brahman is called aprameyam — not an object for any pramana. You cannot perceive Brahman, infer Brahman, compare Brahman to anything, learn Brahman propositionally from scripture, postulate Brahman, or establish Brahman via absence. This is not because Brahman is hidden but because Brahman is the ground on which pramanas operate. Eyes don’t see themselves; awareness can’t be an object within awareness.

Related concepts

• pratyaksha — the first pramana (direct perception)
• shabda-pramana — scripture as pramana
• paroksha-aparoksha — mediate vs immediate knowledge (orthogonal to pramana-type)
• viveka — the discrimination practiced using testimony as pramana
• brahman — called aprameyam, not an object of any pramana

In the Gita

• 02-18 — Krishna calls the embodied self aprameyam (not an object of pramanas)

Lecture evidence

• Ep. 6 [63:55]: Aprameyam defined — “not an object to the pramanas.” Pramanas are the instruments of knowledge.
• Ep. 6 [65:01]: Full list — pratyaksha, anumana, shabda (testimony), arthapatti (postulation), anupalabdhi (non-apprehension).
• Ep. 6 [68:49]: Advaita’s position — Brahman is not an object of pramanas, but the consciousness by which all pramanas operate.