Understanding Error Through Mimamsa Philosophy

When you mistake a rope for a snake in dim light, what exactly goes wrong? Is the snake you “see” real, unreal, or something else entirely? This deceptively simple question consumed some of the greatest minds in Indian philosophy for centuries. The Mimamsa school – one of the six classical schools of Hindu philosophy – developed a particularly compelling answer. What makes the Mimamsa approach stand out is that it doesn’t treat error as a flaw in the world or in perception itself. Instead, it locates the problem squarely in how our cognitive processes relate to the objects around us. And within Mimamsa, two sub-schools – the Prabhakara and the Bhatta – offered two strikingly different explanations of how error actually works.

What is Mimamsa and why does error matter to it? 🔗

Mimamsa (also spelled Mimansa) is a Sanskrit word meaning “reflection” or “critical investigation.” As a philosophical school, it is primarily concerned with interpreting Vedic texts and understanding the nature of dharma through ritual action. It is also known as Purva-Mimamsa (“prior investigation”) because it focuses on the earlier portions of the Vedas dealing with rituals and duties, as opposed to Uttara-Mimamsa (Vedanta), which deals with the later, more metaphysical Upanishadic texts.

But Mimamsa is far more than a system of ritual interpretation. It developed a robust epistemology – a theory of knowledge – that addressed how we know things and, critically, how we go wrong. For a school that upholds svatah pramanyavada (the intrinsic validity of knowledge), error becomes a particularly thorny problem. If all knowledge is inherently valid by its very nature, how do we account for the fact that we sometimes perceive things incorrectly?

This is where Mimamsa’s theory of error, known as khyativada, becomes essential. The term khyativada refers broadly to Indian theories of perceptual error. These theories investigate the nature of the object that is erroneously perceived and its ontological status – is the illusory object real, unreal, or something in between? Different Indian schools proposed different answers. Within Mimamsa itself, the two major sub-schools – founded by Prabhakara Mishra and Kumarila Bhatta – arrived at fundamentally different conclusions.

The Prabhakara school: akhyativada (non-apprehension of distinction) 🔗

Prabhakara, the 7th-century Mimamsa philosopher, proposed a theory of error known as akhyativada, also referred to as vivekakhyati. The term “akhyati” literally means “non-apprehension” – and this name captures the theory’s central claim: error is not a case of wrong knowledge; it is a failure to distinguish between two separately valid cognitions.

Prabhakara’s position rests on a foundational commitment: there is no such thing as genuinely invalid cognition. A cognition may be incomplete or less than fully true, but it can never be outright false. This follows from his acceptance of the intrinsic validity of all knowledge. Prabhakara recognises only two types of cognition – valid perception and memory – and refuses to acknowledge a third category of “delusive” or “illusory” cognition.

How akhyativada explains the classic shell-silver illusion 🔗

Consider the standard example used across Indian philosophy: a person walking on a beach sees a piece of shell (nacre) and mistakes it for a piece of silver. According to Prabhakara, what happens here is not a single false perception. Instead, two perfectly valid cognitive events occur simultaneously:

First, the person genuinely perceives the object in front of them – the shell. There is real sensory contact with a real object. This perception is entirely valid. Second, the person’s memory simultaneously recalls silver that was seen on some previous occasion. This memory, too, is valid in itself – silver does exist and the person has indeed seen it before.

The error arises because the person fails to apprehend the distinction (bheda-agraha) between what is being perceived right now (the shell) and what is merely being remembered (the silver). The two cognitions run together, and the person cannot separate the present percept from the recalled memory. The result is the mistaken judgment “this is silver,” where “this” comes from perception and “silver” comes from memory.

Crucially, in this account, neither individual cognition is false. The perception of the shell is true. The memory of silver is true. The only problem is the non-discrimination between them. Error, then, is an error of omission rather than commission – a failure to notice the boundary between two real cognitive episodes.

Different types of non-discrimination 🔗

Prabhakara identifies that this failure of discrimination can occur in several combinations. When both cognitions are perceptual, error arises from non-discrimination between two perceptions – for example, when a person with jaundice sees a white object as yellow. When both are memories, error is a failure to distinguish between two recalled experiences. And in the most common case, like the shell-silver example, one cognition is perceptual and the other is a memory, and the person fails to separate the two.

The Bhatta school: viparitakhyativada (misapprehension) 🔗

Kumarila Bhatta, the other great Mimamsa thinker of roughly the same period, rejected Prabhakara’s account. Kumarila agreed with Prabhakara on the intrinsic validity of knowledge, but he insisted that error requires a stronger explanation than mere non-discrimination. His theory is called viparitakhyativada – the theory of misapprehension or “contrary apprehension.”

Kumarila’s central objection to Prabhakara is this: mere failure to notice a difference cannot explain why a person actively behaves as though the illusory object is real. When someone mistakes a rope for a snake, they don’t just passively fail to distinguish the rope from a remembered snake – they feel genuine fear, they jump back, they shout a warning. This active response, Kumarila argues, requires a positive wrong cognition, not merely an absence of discrimination.

Error as a single wrong cognition 🔗

According to viparitakhyativada, error is a single unified cognition – not a composite of two partial cognitions as Prabhakara claims. When a person sees a rope and mistakes it for a snake, the error is a single act of misapprehension in which one real thing existing elsewhere (the snake) is wrongly identified with another real thing present before the perceiver (the rope). Both the rope and the snake are real – the rope is here, and snakes exist in the world. The error lies in wrongly relating these two real things in a subject-predicate judgment.

In other words, when someone says “this is a snake” while looking at a rope, both “this” (the rope) and “snake” (a real entity existing elsewhere) are real. But the synthesis – claiming that this particular thing before me is a snake – is a positive misapprehension. The error always lies in the wrong relation between two real things, not in the objects themselves.

Error as commission, not just omission 🔗

This is the sharpest point of disagreement between the two schools. For Prabhakara, error is purely an error of omission – the mind fails to notice a distinction. For Kumarila, error is an error of commission – the mind actively produces a wrong synthesis. Kumarila maintains that error is a single psychosis, a unitary cognition that positively misrepresents reality, rather than two incomplete cognitions that merely run together.

What both schools share: a realist foundation 🔗

Despite their differences, both the Prabhakara and Bhatta schools share an important philosophical commitment: realism. Both insist that the objects involved in error are real. The shell is real. The silver is real (it exists somewhere in the world). The rope is real. The snake is real. There is no need to invoke unreal or indescribable entities to explain illusion.

This distinguishes the Mimamsa theories of error from other Indian approaches. The Madhyamika Buddhists, for instance, proposed asat-khyativada, arguing that the illusory object is entirely non-existent. The Advaita Vedantins advanced anirvacaniya-khyativada, claiming that the illusory object is neither real nor unreal but “indescribable.” Mimamsa rejects both of these positions. For both Prabhakara and Kumarila, error can be explained entirely in terms of real objects and the cognitive processes that relate to them.

Both schools also uphold svatah pramanyavada – the doctrine that knowledge is intrinsically valid. The validity of any cognition arises from the same conditions that produce the cognition itself, not from any external verification. Invalidity, on the other hand, is always caused by some defect – either in the sense organs, in the conditions of perception, or in the cognitive process itself. This means that our default stance toward any cognition should be trust; error is the exception that needs to be specifically accounted for.

Why the Mimamsa theory of error matters 🔗

The Mimamsa approach to error carries implications that go well beyond the specific examples of ropes and snakes. By treating error as a problem in cognitive processes rather than a flaw in reality itself, Mimamsa offers a framework that resonates with modern discussions in philosophy of mind and cognitive science.

Prabhakara’s akhyativada, in particular, anticipates certain ideas in contemporary psychology about how memory intrusions and source confusion can lead to false judgments. We often mistake a remembered experience for a present one – this is essentially what Prabhakara described over a thousand years ago. His insight that both the perception and the memory are individually valid but become problematic only when their boundaries blur is a sophisticated cognitive observation.

Kumarila’s viparitakhyativada, meanwhile, highlights the active, constructive nature of perception. The mind doesn’t passively receive information – it synthesizes, interprets, and sometimes gets it wrong. Error for Kumarila is not a passive absence but an active production, a wrong synthesis that carries real behavioural consequences. This resonates with constructivist approaches in modern cognitive science that see perception as an active interpretive process.

Together, the two Mimamsa theories remind us that error is not just about the world presenting itself falsely. It is about the complex relationship between a perceiving subject, the objects of perception, and the cognitive machinery that mediates between them. The world doesn’t deceive us – our cognitive processes sometimes fail to connect us with the world accurately.

What do you think? If both Prabhakara and Kumarila agree that the objects of error are real, does it matter whether error is a failure to notice a distinction or an active misapprehension? And can a theory of knowledge that treats all cognition as intrinsically valid truly account for the pervasiveness of error in everyday human experience?

References

1. https://en.wikipedia.org/wiki/M%C4%ABm%C4%81%E1%B9%83s%C4%81
2. https://en.wikipedia.org/wiki/Khyativada
3. https://egyankosh.ac.in/bitstream/123456789/38172/1/Unit-5.pdf
4. https://en.wikipedia.org/wiki/Kum%C4%81rila_Bha%E1%B9%AD%E1%B9%ADa
5. https://www.wisdomlib.org/hinduism/essay/tattvabindu-of-vachaspati-mishra-study/d/doc1502601.html
6. https://egyankosh.ac.in/bitstream/123456789/34664/1/Unit-4.pdf
7. https://egyankosh.ac.in/bitstream/123456789/34935/1/Unit-3.pdf