Human Knowledge: A Social and Historical Perspective

Posted on Nov 26, 2024 in Philosophy and ethics

Human Knowledge: A Social and Historical Task

Human knowledge is an ongoing, ever-evolving process. This is due to two key factors: the constant potential for expanding information and the possibility that currently accepted knowledge may be challenged or superseded.

The Dynamic Nature of Knowledge

Knowledge possesses distinct characteristics:

  • Limited Scope: A single human being cannot possess absolute or perfect knowledge. Limitations arise from physical constraints (inaccessibility of certain information), biological constraints (limitations of the human mind), and social constraints (cultural validation of specific knowledge types).
  • Constant Change: Reality is in perpetual flux. While a degree of continuity persists, enabling us to recognize the same reality, change is constant, often driven by human intervention.

There’s a clear consensus that human knowledge progresses towards greater completeness and refinement, supported by substantial evidence.

The Dynamic Nature of Scientific and Ethical Knowledge

Why is human knowledge dynamic?

  • Physical Limitations: Some aspects of reality remain inherently unknowable.
  • Biological Limitations: Our minds have finite capacities, limiting the extent of our knowledge.
  • Social Influences: Communities determine what is considered true or worthy of investigation. Shifting interests lead to changing worldviews, impacting scientific pursuits.

The Idea of Progress

Progress implies improvement over time, where current achievements surpass previous ones.

The Advancement of Knowledge: Accumulation or Revolution?

Thomas Kuhn (1922-1996), in his influential book “The Structure of Scientific Revolutions,” analyzed the progression of knowledge, prompting a reassessment of existing concepts. While focused on scientific knowledge, Kuhn’s insights apply to other knowledge domains.

Knowledge as Accumulation

The traditional view posits that knowledge advances through accumulating data, information, and results. New knowledge builds upon existing knowledge, creating an increasingly complex and refined structure. This aligns with the idea of progress, where greater knowledge equates to better understanding.

Knowledge as Revolution

Kuhn challenges the accumulation model, arguing that knowledge progresses through paradigm shifts. A pre-scientific period establishes the foundation for a paradigm—a set of shared beliefs, theories, assumptions, and values within a scientific community. During “normal science,” the paradigm is refined and developed. However, anomalies eventually arise that cannot be resolved within the existing paradigm, leading to a “crisis.” This crisis culminates in a paradigm shift—a revolution—where a new paradigm replaces the old one. This cycle then repeats.

Knowledge advances not just through incremental additions within a paradigm, but through revolutionary shifts between paradigms, introducing new ways of thinking, working, and understanding knowledge itself.

Science as Progressive Knowledge

According to Kuhn’s “The Logic of Scientific Research”:

  1. A new scientific theory is accepted as true if and only if it explains all phenomena explained by the previous theory and offers additional explanatory power.
  2. A scientific theory must be empirically verifiable. If experiments or observations contradict the theory’s predictions, the hypothesis must be rejected.

Types of Time

There are three ways to understand time:

  • Psychological Time: Our subjective experience of time, influenced by personal perception and emotional states.
  • Cosmological Time: Objective, measurable time used to calculate the age of stars or the universe.
  • Historical Time: A bridge between psychological and cosmological time, encompassing the timeline of human events. It acknowledges the changing nature of time and the influence of specific eras.

Generations and Historical Context

A generation shares a specific timeframe—their lifespan. Individuals within a generation are “peers,” shaped by the culture, knowledge, and prevailing worldview of their time.

Memory and Its Types

Memory, the ability to recall and evoke the past, is crucial for establishing personal identity. Different types of memory exist:

  • Long-Term Memory: Stores information for extended periods, often through repetition or learning.
  • Short-Term Memory: Holds information briefly, used for immediate tasks, and quickly forgotten.

Forgetting

Forgetting, while sometimes caused by illness or brain abnormalities, is a normal and necessary process. It allows us to function efficiently and serves as a psychological defense mechanism, protecting us from emotionally overwhelming or unpleasant memories.

Historical Memory

Beyond personal memory, collective memory encompasses the shared memories of a community, passed down through generations. This forms the basis of history. We remember events we haven’t directly experienced through narratives, rituals, celebrations, art, literature, and other cultural forms. History as a discipline begins when humanity starts recording these narratives.

Historical Perspectives on Knowledge

  • Classical Greece (5th-4th Century BC): Knowledge is direct access to reality (Plato, Aristotle).
  • Middle Ages (4th-14th Century): Knowledge is understanding God’s creation (Augustine of Hippo, Thomas Aquinas).
  • Renaissance (15th-16th Century): Knowledge of nature is paramount (Galileo).
  • Modernity (17th-18th Century):
    • Rationalism: Knowledge is based on reason (Descartes).
    • Empiricism: Knowledge is based on sensory experience (Hume).
    • Transcendental Idealism: Knowledge combines reason and experience (Kant).
  • 19th Century:
    • Marxism: Knowledge is applied practice (Marx).
    • Historicism: The study of history is knowledge (Dilthey).
    • Positivism: Knowledge is based on facts (Comte).
  • 20th Century:
    • Phenomenology: Knowledge is derived from experience (Husserl).
    • Relativity: Knowledge is relative (Einstein).
    • Sociology of Knowledge: Knowledge is influenced by social and cultural factors (Scheler).

What is Knowledge?

Defining Knowledge

Knowledge involves grasping a situation or concept in a way that can be shared with others. This cognitive activity involves a subject (the knower) and an object (the known). We distinguish between the act of knowing and the resulting knowledge itself.

Levels of Knowledge

  • Opinion: A belief without objective or subjective justification.
  • Belief: A conviction based on subjective justification, lacking objective proof.
  • Knowledge: A justified belief supported by both subjective and objective evidence.

The Interest of Knowledge

All knowledge is driven by an interest:

  • Technical Interest: Aims to control and exploit nature through scientific prediction (natural sciences).
  • Practical Interest: Seeks understanding and communication among humans (historical-hermeneutic sciences).
  • Emancipatory Interest: Aims to liberate humans from domination and repression (critical social sciences).

These interests should serve human well-being and liberation, with applications subject to public oversight.

Rules governing scientific research:

  • Beneficence: Ensuring technology benefits humanity and avoids harm.
  • Autonomy: Considering human needs and desires in scientific endeavors.
  • Justice: Prioritizing research that promotes social equality and addresses the economic disparities surrounding health.

The Possibility of Knowledge

  • Dogmatism: Humans can directly grasp reality.
  • Skepticism: Reliable knowledge is unattainable.
  • Subjectivism/Relativism: Truth is relative to culture, time, or social group.
  • Pragmatism: Truth is what is useful.
  • Critical Realism: Knowledge is possible but limited by our cognitive faculties; it must be tested against reality.
  • Perspectivism (Ortega y Gasset): Truth is a composite of individual perspectives, with absolute truth beyond human reach.

Scientific Knowledge: Evolution of the Term ‘Science’

From ancient Greece to the Renaissance, science and philosophy were intertwined, both seeking universal, necessary, and eternal knowledge. The modern concept of science emerged during the Renaissance’s scientific revolution (Copernicus, Galileo, Newton), separating science from philosophy through new research methods in physics and astronomy.

Key changes included:

  • Mathematization of science and nature.
  • A mechanistic view of nature.
  • Focus on exploiting nature, not just contemplation.
  • Emphasis on experimentation and mathematical application.
  • Shifting the goal from defining what things are to understanding how they behave.

Is Philosophy a Science?

Scientific statements must be empirically verifiable or falsifiable. While philosophy is rational and rigorous, it doesn’t fit the modern definition of science. Rational knowledge can exist outside of science.

Types of Science

Sciences are historical constructs with unique developmental paths. Physics gained autonomy during the Renaissance, while sociology and psychology emerged later. A field becomes a science when it:

  • Defines its object of study.
  • Establishes its own method.

The Importance of Method

A science’s defining characteristic is its method, which determines how reality is analyzed and what constitutes a valid object of study.

Sciences are categorized as formal or empirical:

  • Formal Sciences: Logic and mathematics, focusing on reasoning rather than empirical data.
  • Empirical Sciences: Natural (physical, biological) and social sciences, based on observation and experimentation.

Methods of Scientific Knowledge

Formal Sciences

Formal sciences employ deduction, reasoning from universal to particular propositions. Deductive systems, also known as axiomatic systems, consist of:

  • Axioms: Fundamental, self-evident or pragmatically justified assumptions.
  • Rules of Formation and Transformation: Used to derive theorems from axioms.
  • Theorems: Statements deductively derived from axioms.

Natural Sciences

Natural sciences use inductive and hypothetical-deductive methods.

  • Induction: Reasoning from particular observations to general conclusions. Complete induction examines all cases within a scope, while incomplete induction generalizes from a limited sample, yielding probable but not necessarily true conclusions.
  • Hypothetical-Deductive Method: A five-step process involving observing a phenomenon, formulating hypotheses, deriving testable implications, experimental testing, and accepting or rejecting the hypothesis based on results. Repeatedly confirmed hypotheses become laws, which can be unified into general theories.

Methods in Social Sciences

Social sciences study social reality, with the subject being part of the object of study. They face unique challenges:

  • Limited Predictability: Individual freedom reduces predictive accuracy compared to natural sciences.
  • Limited Generalizability: Findings are less generalizable due to individual variation.
  • Value Neutrality Challenges: Research is inherently influenced by cultural perspectives, making complete objectivity difficult.