Epistemology
The word epistemology comes from ancient Greek terms meaning knowledge and study of reason. It was coined in the 19th century to designate this field as a distinct branch of philosophy. Epistemologists examine belief, truth, evidence, and reason to understand how knowledge is created. They investigate sources like perception, introspection, memory, reason, and testimony. Knowledge contrasts with ignorance because people rarely have complete understanding of any field. Some limitations are inherent in human cognitive faculties while others depend on external circumstances.
Early reflections on knowledge appear in ancient Greek philosophy where Plato studied what distinguishes knowledge from true opinion. His student Aristotle explored scientific knowledge through sensory experience and inference from general principles. The Upanishads composed between 700 and 300 BCE examined how people acquire knowledge including introspection and deduction. In medieval times al-Farabi and Averroes debated which vehicle better leads to truth: philosophy or theology. René Descartes used methodological doubt to find absolutely certain knowledge starting from the assertion I think therefore I am. John Locke rejected innate ideas arguing instead that all ideas depend on experience either as ideas of sense or reflection.
Philosophical skepticism questions whether humans can attain knowledge by challenging foundations upon which claims rest. Global skeptics assert there is no knowledge in any domain while Pyrrhonian skeptics recommended suspension of belief for tranquility. Fallibilists agree absolute certainty is impossible but conclude fallible knowledge exists. Empiricists emphasize sense experience as primary source while rationalists argue some knowledge accessed directly through reason without sensory input. Foundationalists distinguish basic beliefs justified directly from non-basic beliefs inferred from other beliefs. Coherentists reject this distinction saying justification requires beliefs mutually supporting each other like an interconnected web. Internalism says justification depends only on factors within individual mental states whereas externalism asserts relevant factors are also outside the believer's perspective.
Formal epistemology employs logic and mathematics to investigate nature of knowledge using probability theory to define norms of rationality. Naturalized epistemology relies on empirical observation and natural sciences rather than a priori reasoning. Social epistemology covers knowledge acquisition transmission and evaluation within groups emphasizing how people rely on each other when seeking knowledge. The epistemology of science examines how scientific knowledge generated and what problems arise validating claims. The epistemology of mathematics studies origin of mathematical theories investigating role of proofs and empirical sources. Religious epistemology evaluates reliability of evidence from religious experience and holy scriptures while asking whether norms of reason apply to faith. Decolonial scholarship opposes global influence of Western knowledge systems seeking to undermine hegemony and decolonize understanding.
Psychology describes what beliefs people have and how they acquire them explaining why someone holds specific belief. Epistemology focuses on evaluating beliefs leading to judgment about whether belief is justified and rational in particular case. Cognitive science understands mental events as processes transforming information while artificial intelligence implements solutions for knowledge representation. Logic studies correct reasoning relevant to inferential knowledge arising when person reasons from one known fact to another. Decision theory explores how beliefs translated into action examining standards of good decisions identifying beliefs central aspect of decision making. Anthropology examines how knowledge acquired stored retrieved and communicated covering social cultural circumstances affecting reproduction changes. Sociology of knowledge explores physical demographic economic sociocultural factors impacting knowledge emergence effects on people socioeconomic conditions related dominant ideology society.
Up Next
Common questions
What is the origin of the word epistemology?
The word epistemology comes from ancient Greek terms meaning knowledge and study of reason. It was coined in the 19th century to designate this field as a distinct branch of philosophy.
Who were the early philosophers who studied epistemology?
Plato studied what distinguishes knowledge from true opinion while his student Aristotle explored scientific knowledge through sensory experience and inference from general principles. The Upanishads composed between 700 and 300 BCE examined how people acquire knowledge including introspection and deduction.
How does philosophical skepticism challenge human knowledge?
Philosophical skepticism questions whether humans can attain knowledge by challenging foundations upon which claims rest. Global skeptics assert there is no knowledge in any domain while Pyrrhonian skeptics recommended suspension of belief for tranquility.
When did René Descartes use methodological doubt to find certain knowledge?
René Descartes used methodological doubt to find absolutely certain knowledge starting from the assertion I think therefore I am. This approach established a foundation for inquiry into the nature of knowledge.
Why do empiricists emphasize sense experience as primary source?
Empiricists emphasize sense experience as primary source because they argue that all ideas depend on experience either as ideas of sense or reflection. John Locke rejected innate ideas arguing instead that all ideas depend on experience.