Prameya: The Sixteen Padarthas, Jnana, Bhrama, and Samsaya
The sixteen padarthas
Nyaya Sutra 1.1.1 lists sixteen categories: pramana, prameya, samsaya, prayojana, drstanta, siddhanta, avayava, tarka, nirnaya, vada, jalpa, vitanda, hetvabhasa, chala, jati, and nigrahasthana. The exam tests both the list and the fact that prameya is only one category, not a synonym for all sixteen.
Knowledge, error, and doubt
- Jnana is cognition or awareness; it may be prama (valid) or aprama (invalid).
- Bhrama is erroneous cognition, as when a rope is cognized as a snake. Nyaya's theory is anyathakhyati: one object is misapprehended as another under faulty conditions.
- Samsaya is doubt, a wavering between alternatives, e.g. 'Is this a post or a person?' It is not error, because no definite false identification has occurred.
- Prameya includes self, body, senses, objects, cognition, mind, activity, fault, rebirth, fruit, suffering, and liberation; the exact list is expounded in the sutras and commentaries.
Worked example
At dusk a traveler sees a coiled shape and thinks, 'This is a snake.' The cognition is bhrama, not samsaya, because the mind has settled on one wrong identification. On closer inspection the shape is a rope, and the later cognition corrects the earlier one. The example shows Nyaya realism: the object is a rope, while the error lies in misattribution.
Traps
Do not confuse samsaya with bhrama. Do not equate prameya with the whole sixteen-padartha scheme. Do not describe Nyaya error as pure non-cognition; it is misapprehension. Do not list liberation as a substance.