Epistemology: Understanding Knowledge, Truth, and Limits

Theory of Knowledge

1. Levels and Types of Knowledge

Ignorance is the total absence of knowledge. Doubt differs from ignorance because it has an object. Opinion is a confidence that is sometimes true, even when there is no solid proof to guarantee truth. Belief implies that our convictions do not come exclusively from personal experience. The top of the classification is solid and certain knowledge, where we are able to offer a justification based on rational arguments.

Types of Knowledge:

• Theoretical Knowledge: Aims to understand reality and discover the truth.
• Practical Knowledge: Directs our behavior in both moral actions and technical production.

2. Methods of Knowledge

Descartes' Method

• Evidence: Avoid declaring a sentence true prematurely; take your time and only accept propositions that are clear and distinct.
• Analysis: Divide difficulties into as many parts as possible.
• Synthesis: Compose parts into a structure, imposing an order.
• Lists and Review: Make all necessary reviews to ensure nothing is forgotten.

Kant's Transcendental Method

Our knowledge is not determined by objects; instead, the objects of knowledge are determined by the rules of the subject (the subject's way of knowing).

3. The Objective: Truth

• Empirical Evidence: A statement is true if it can be corroborated by sensory experience.
• Rational Evidence: A statement is true if reason makes it impossible to doubt.
• Coherence: A statement is true if it does not contradict other accepted statements.
• Authority: Something is true if stated by a credible person or institution.
• Consensus: Educated, rational subjects accept it as such.
• Usefulness: The truth is found by putting a statement into practice.
• Correspondence Theory: A statement is true when it corresponds to the reality it refers to.
• Coherence Theory: It must not contradict previously accepted truths.
• Success Theory: We evaluate truth by examining the practical consequences of a statement.

4. The Limits of Knowledge

• Realism: The subject knows reality directly without consciousness imposing order on the objects.
• Idealism: Objects of human knowledge are dependent on the activity of the mind.
• Relativism: What is true for one group at a specific time may not be true for another.
• Perspectivism: What each person perceives is neither false nor erroneous.
• Dogmatism: We must place complete trust in reason as the instrument of knowledge.
• Scepticism: Puts all knowledge in doubt and claims that human reason is weak.