Notes on Philosophy as Method, Thales, and the Birth of Philosophical Practice

Philosophy as a living practice

• Philosophy defined as a set of ideas, principles, beliefs, and values we use to explain reality and existence.
• Implications of this view:
  • Everyone has a philosophy, even if different. There may be overlap (e.g., shared beliefs about the world) but each person has their own network of ideas.
  • Philosophy is operative before it is thematic: it shapes how we perceive and interpret the world before we can articulate why we hold those beliefs.
  • Doing philosophy includes becoming increasingly aware of what you actually believe and why you believe it, and being willing to change those beliefs if the underlying reasons aren’t compelling.
• Inheritance and formation of philosophy:
  • Much of what we believe is inherited from family, culture, and society (e.g., how a bedroom is painted, which can encode gender norms like blue for boys or pink for girls).
  • These inherited ideas influence how we engage with the world and contribute to a potentially tangled mix of beliefs with possible contradictions.
• Examples of potential contradictions in personal philosophy:
  • Life is highly valuable but some may eat meat; or life is valuable but we support eradicating a virus.
  • Definitions of life, the importance of life, and stances on topics like abortion or the death penalty can clash.
  • The claim that everything happens for a reason vs. the claim of free will.
• Summary takeaway: philosophical commitments can be layered, inherited, and sometimes inconsistent; recognizing and examining these layers is part of doing philosophy.

From “you already have a philosophy” to the Thales detour

• The aim is to move from treating philosophy as something you merely possess to a method you actively deploy.
• We take a detour to Thales of Miletus to illustrate how philosophy begins to be a method, not just a collection of beliefs.
• Thales is celebrated not for being exactly right about everything, but for introducing a distinctive philosophical method that questions how we explain change.
• Context: to understand Thales, we need a quick sense of ancient Greece’s intellectual landscape.

Ancient Greece: mythos vs logos, and the space for asking questions

• Ancient Greeks were highly inquisitive and asked a lot of questions about nature and reality.
• Mythos as a way of explaining reality:
  • Questions about natural regularities (e.g., why the sun rises and sets daily) were often answered with mythic narratives (e.g., Apollo’s fiery chariot across the sky).
  • Mythic explanations carried divine authority and were not readily questioned.
• The culture’s resistance to new kinds of explanation was a backdrop Thales and others challenged.
• A notable example: a young questioner asking, “Why does the sun rise from east to west every day?” which illustrates the move from accepting mythic explanations to seeking rational inquiry.
• The takeaway: the space for questioning and seeking non-mythical explanations is a hallmark of philosophical method.

The paradox of change and Thales’s radical move

• Thales’s burning question: what is up with change? It seems that things change into what they are not, which feels paradoxical.
• Simple illustrative contrasts:
  • Grass is green; milk is white. Grass changes into milk in common sense (metaphorically speaking) though they are not the same substance.
  • Classic thought experiments (e.g., ship or chair) push us to think about what remains the same when parts change.
• A key early thought: maybe change is an illusion and what remains is a single underlying substance.
• Thales’s proposal: reality is unified by a single underlying substance, which he identified as water.
  • Water can take multiple states (solid, liquid, gas) and is essential for life, which supports its claim to be fundamental.
  • The idea that all things are in some sense made of water is an early form of monism, seeking a unifying explanation for diversity in the natural world.
• A critical counterpoint that arrives early: the sun is clearly a fiery object, not water, so the monist claim is false in one obvious respect.
• What matters about Thales isn’t the factual correctness of “everything is water,” but the methodological move: he attempted to justify a claim about reality using a testable approach rather than myth.
• This marks the shift from mythic explanation to a logos-based methodology: reasoning about the world and testing ideas against evidence.
• Thales’s emphasis on evidence-based reasoning is presented as the birth of a method that can lead to truth rather than merely coherent stories.

Thales’s method and the birth of philosophical method

• Thales is portrayed as introducing a methodology that relates to truth in a way myth did not:
  • Propose a theory (e.g., reality is water).
  • Justify the theory with reasoning and observation, not myth.
  • Be open to criticism and evidence that could falsify the theory.
• The lecture emphasizes this as a turning point: logos (reasoned explanation) over mythos (myth-based explanations).
• The broader significance: a long arc of human progress is anchored in adopting, testing, and revising explanations about reality.
• The core message: the method matters as much as, or more than, any single claim.

The four-step philosophical method (the core to practice)

• Four-step process introduced as the practical way to do philosophy: 1) Theory postulation: formulate the explanatory theory that answers the driving question. Example: Thales asks, “What is change?” and proposes “everything is water.” 2) Justification: provide evidence or reasoning to support the theory, not just a story. 3) Critical review: actively attempt to refute the theory with counterexamples and falsification. 4) Revision: respond to criticisms and re-evaluate the theory; two forms of revision:
  • Paradigm shift: the initial theory is entirely refuted and a new theory is needed.
  • Apologetics (defense): criticisms are acknowledged, but the theory is defended and refined; new criticisms may still emerge.
• The process is iterative and infinite in scope: even when one generation revises or defends ideas, future generations continue the method.
• A playful warning about the method’s power: philosophical method is described as dangerous if misused (i.e., the danger of becoming a gatekeeper between oneself and truth). The point is to empower individuals to think and challenge ideas rather than depend on authorities.

Philosophy vs science: shared method, different domains

• Similarity: both philosophy and science share an emphasis on reasoning, questioning, and seeking truth.
• Key difference: science is empirical; it relies on observation and experimentation to answer questions that can be tested experimentally.
• Philosophy often deals with non-empirical questions (e.g., Does God exist?) where empirical observation alone cannot settle the issue; justification must go beyond direct observation and appeal to reasoning, logic, and argument.
• The plan to introduce logic as a tool:
  • Early exposure to logic is promised as a brief course enhancement to support philosophical justification.
  • Logic is treated as its own subject, but a practical subset will be covered to aid the rest of the course.

The central claim and its implications for thinking

• The speaker’s overarching aim is to cultivate a mindset that sees the value of challenging assumptions and revising beliefs in light of evidence.
• The ethical and social stakes:
  • The danger of “philosophical meth” as a metaphor for becoming the intermediary between oneself and truth and attempting to control others' access to truth.
  • History shows that attempts to suppress questioning (e.g., bans on books or restricted access to knowledge) ultimately undermines the very aims of philosophy: to seek truth and understand reality.
• The practical takeaway: each person has an inner drive to know and understand, and philosophy trains this drive in a structured, critical way that can be applied across generations.

How the course will unfold and what to expect next

• The course will begin with a formal introduction to logic, though only a concise subset will be covered this term.
• A memorable example will be used to illustrate non-empirical justification (the question of whether God exists) to show how philosophy reaches conclusions beyond sensory data.
• The instructor invites questions and emphasizes a collaborative journey: students engage, question, and contribute to the ongoing discussion.
• The session closes with a transition to Wednesday’s class, focusing on logic in more depth.

Key terms and ideas to remember

• Philosophy as operative vs thematic: your beliefs guide perception before you articulate reasons.
• Mythos vs Logos: myth-based explanations versus rational, testable explanations.
• Change and substance: the puzzle Thales raises about how things change while some underlying reality persists.
• Substance/essence: the idea that there might be a fundamental stuff that constitutes reality and gives things their identity.
• Monism (water as the fundamental substance): Thales’s claim that all things are ultimately made of one substance, water.
• Testable hypotheses: the methodological shift toward proposing hypotheses that can be tested against evidence.
• Four-step method: Theory postulation → Justification → Critical review → Revision (paradigm shift or apologetics).
• Logos vs mythos in the history of thought: the move toward rational inquiry that can yield progress.
• Non-empirical justification: justification beyond what is observed, using logic and reason.
• The role of logic in philosophy: a tool to structure arguments, evaluate validity, and support sound reasoning.

Note: The transcript contains informal anecdotes, humor, and some vivid language. The notes above have been reformulated to preserve the conceptual content while maintaining clarity and a focus on the philosophical ideas and methods.