Which one of the following sources of knowledge (pramana) in classical Indian Philosophy is based on similarity of the unobserved object with a known object?

Question

Prepp Team · Accepted Answer

Understanding Sources of Knowledge (Pramana) in Indian Philosophy

In classical Indian philosophy, 'Pramana' refers to a valid means of knowledge or a source of knowledge. Different schools of thought accept a varying number of pramanas. The question asks about a specific type of pramana that relies on the similarity between an unobserved object and a known object to gain knowledge.

Analyzing the Pramanas Mentioned in the Options

Let's look at each option provided:

Arthapatti (Postulation or Implication): This pramana is the knowledge gained from presumption or implication. It's used when a known fact cannot be explained without assuming another fact. For example, if a healthy person is known to be fasting during the day but is gaining weight, one presumes they must be eating at night. Knowledge is gained by postulating this unseen act.
Anumana (Inference): This is knowledge gained through reasoning or inference. It involves observing something (like smoke on a hill) and inferring something else based on a known relationship (where there is smoke, there is fire). It requires a universal connection (vyapti) between the 'hetu' (reason, like smoke) and the 'sadhya' (what is to be proved, like fire).
Upamana (Comparison or Analogy): This pramana is the knowledge gained from similarity. It involves understanding the meaning of a term or identifying an unknown object based on its resemblance to a known object. A classic example is being told that a 'gavaya' (wild ox) is like a cow. Later, upon seeing an animal resembling a cow in the forest, one gains the knowledge that this animal is a gavaya. The knowledge is derived from the perceived similarity with the known object (cow).
Anupalabdhi (Non-perception or Non-apprehension): This pramana is the knowledge of absence. It is used to know that something does not exist at a particular place or time because it is not perceived, even though it is capable of being perceived. For example, knowing that there is no jar on the table because you look and do not see one.

Identifying the Correct Pramana Based on Similarity

The question specifically describes a source of knowledge based on "similarity of the unobserved object with a known object". Comparing this description with the explanations above, it is clear that Upamana is the pramana that fits this definition precisely. It is the process of gaining knowledge about something unknown by comparing it to something known based on resemblance or analogy.

Therefore, the source of knowledge based on similarity of the unobserved object with a known object is Upamana.

Summary of Pramanas
Pramana	Basis of Knowledge	Example
Arthapatti	Postulation/Implication	Healthy person fasting daily must eat at night to gain weight.
Anumana	Inference/Reasoning	Seeing smoke on a hill implies there is fire.
Upamana	Comparison/Similarity	Identifying a 'gavaya' by its resemblance to a cow.
Anupalabdhi	Non-perception/Absence	Knowing a jar is not on the table because it's not seen.

Conclusion

Based on the analysis of the pramanas, Upamana is the correct answer as it is the source of knowledge derived from comparison and the recognition of similarity between an unknown object and a known one.

Revision Table: Classical Indian Philosophy Pramanas

Here's a quick table to help revise the key pramanas often discussed in classical Indian philosophy:

Sanskrit Term	English Equivalent	How Knowledge is Gained
Pratyaksha	Perception	Direct sensory experience (seeing, hearing, etc.) and internal perception.
Anumana	Inference	Reasoning based on a known relation (e.g., cause and effect, sign and the signified).
Upamana	Comparison/Analogy	Understanding a new object or term based on its similarity to a familiar one.
Shabda	Testimony	Knowledge gained from reliable sources like scriptures or trustworthy persons.
Arthapatti	Postulation/Implication	Presuming an unknown fact to reconcile two apparently contradictory known facts.
Anupalabdhi	Non-perception/Non-apprehension	Knowing the absence of something through its non-perception.

Note that different schools of Indian philosophy accept different numbers of these pramanas as valid.

Additional Information: The Importance of Pramanas in Indian Philosophy

The concept of pramanas is fundamental to Indian epistemology (Jnana Yoga). It addresses the crucial question of "How do we know what we know?". Each school of Indian philosophy develops its epistemology by validating certain pramanas and sometimes rejecting others. For instance, Nyaya school accepts four pramanas (Pratyaksha, Anumana, Upamana, Shabda), while the Mimamsa school accepts five or six (including Arthapatti and Anupalabdhi), and the Charvaka school accepts only one (Pratyaksha). Understanding pramanas helps us appreciate the rigorous approach to knowledge and truth adopted by these philosophical systems.