Epistemology studies what makes a claim valid and how belief connects to truth. Philosophers test these ideas against skeptical thought experiments and competing views of reality.
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Question 1
According to the traditional philosophical definition, what three elements constitute knowledge?
The traditional epistemological model defines knowledge as justified true belief, requiring a true proposition, internal belief, and adequate justification.
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The traditional definition of knowledge is known as Justified True Belief, or JTB for short. According to the JTB framework, three specific conditions must be met for a person to know a proposition.
From the Knowverse course text.
Question 2
What is the core argument behind the Dream Argument in skepticism?
The Dream Argument points out that perfect dreams feel entirely real, meaning sensory experiences alone cannot prove one is awake.
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It suggests that because we cannot reliably distinguish between being awake and dreaming, our sense experience cannot be fully trusted.
From the Knowverse course text.
Question 3
What undeniable truth did René Descartes discover through his Evil Demon thought experiment?
Descartes concluded that even if an evil demon deceived him about everything, he had to exist as a thinking entity to be deceived.
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Descartes realized that even if the Evil Demon was tricking him, he must exist in order to be tricked. This conclusion is known as the Cogito, which is short for 'I think, therefore I am'.
From the Knowverse course text.
Question 4
How does foundationalism propose to structure human knowledge?
Foundationalism holds that knowledge forms a secure structure where complex claims rest upon rock-solid, self-evident baseline truths.
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In Foundationalism, every piece of knowledge must be traced back to a self-evident truth that requires no further proof.
From the Knowverse course text.
Question 5
What does the empiricist concept of 'tabula rasa' assert about the human mind at birth?
Tabula rasa describes the mind at birth as a completely blank chalkboard that acquires all ideas and knowledge through subsequent experience.
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Philosophers describe this starting state as Tabula Rasa, a Latin phrase meaning 'blank slate'. Just as a clean chalkboard has no writing on it, the human mind at birth is a blank surface waiting for the world to write upon it.
From the Knowverse course text.
Question 6
What is a priori knowledge according to rationalism?
A priori knowledge denotes truths discovered through logic and pure reason without requiring empirical confirmation in the physical world.
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The term A Priori literally means 'from the earlier'. It refers to knowledge that comes before, or independent of, any sensory experience.
From the Knowverse course text.
Question 7
What does indirect realism argue about our perception of physical objects?
Indirect realism posits that the brain builds internal mental models, meaning we directly experience mental representations rather than raw physical objects.
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To solve these contradictions, many philosophers turn to Indirect Realism, the idea that we don't see the world directly. Instead, our brains create a mental representation based on the data gathered by our eyes, ears, and skin.
From the Knowverse course text.
Question 8
What is the metaphorical 'veil of perception'?
The veil of perception represents the barrier between internal subjective sensations and the external reality that produces them.
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The 'Veil' is the metaphorical gap that exists between our internal experiences and the external physical world.
From the Knowverse course text.
Question 9
What principle did George Berkeley express with the phrase 'Esse est percipi'?
Berkeley's subjective idealism holds that things exist only insofar as they are perceived by a conscious mind.
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Berkeley summarized this with the Latin phrase Esse est percipi, which translates to 'to be is to be perceived'.
From the Knowverse course text.
Question 10
How does the correspondence theory define truth?
Under the correspondence theory, a claim is true if it matches a factual state of affairs in reality.
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The most common way to understand truth is the Correspondence Theory, which says truth is a 'match' between words and the world. If your statement corresponds to a fact, it is true; if it does not, it is false.
From the Knowverse course text.
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A person sitting in a windowless room might guess that it is snowing outside. Even if it is snowing, a correct guess does not count as knowledge. In epistemology, philosophers traditionally define knowledge as justified true belief. Under this framework, you must believe the proposition, the proposition must be true, and you must possess solid justification for holding it.
Reliable justifications include direct sensory observation, verified testimony, or logic. Without justification, even accurate statements remain accidental guesses rather than genuine knowledge.
Source excerpt +
The traditional definition of knowledge is known as Justified True Belief, or JTB for short. According to the JTB framework, three specific conditions must be met for a person to know a proposition.
Skepticism asks whether our claims to know anything are truly justified. The Dream Argument points out that our waking senses feel just like realistic dreams, leaving us unable to prove our current state through physical tests. Global skepticism takes this further, suggesting we cannot prove an external world exists outside our minds.
In response to extreme doubt, René Descartes used the thought experiment of an evil demon deceiving his senses. He realized that the act of doubting proves his own thinking mind exists, forming the foundational certainty of the Cogito.
Source excerpt +
Descartes realized that even if the Evil Demon was tricking him, he must exist in order to be tricked. This conclusion is known as the Cogito, which is short for 'I think, therefore I am'.
From the Knowverse course text.
Empiricism Versus Rationalism
Empiricists argue that all knowledge originates in sensory experience. Under this view, the human mind begins at birth as a tabula rasa, or blank slate, receiving immediate sense data like colors and shapes. In contrast, rationalists argue that logic and reason are the primary sources of knowledge.
Rationalists point to innate ideas, concepts present in the mind from birth that do not depend on sensory trial and error. These built-in concepts give rise to a priori knowledge, which is verified by reason prior to checking the physical world.
Source excerpt +
Philosophers describe this starting state as Tabula Rasa, a Latin phrase meaning 'blank slate'.
From the Knowverse course text.
Direct realism claims our senses give us unmediated access to physical objects. Because optical illusions deceive the senses, indirect realism argues that we only interact with internal mental representations of objects, creating a veil of perception between our minds and the world. Metaphysical idealism goes further by claiming reality is fundamentally immaterial.
George Berkeley argued that physical matter does not exist, claiming things exist only when perceived. To evaluate these claims, correspondence theory requires statements to match external facts, while coherence theory measures truth by internal logical consistency.
Source excerpt +
Berkeley summarized this with the Latin phrase Esse est percipi, which translates to 'to be is to be perceived'.
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