Jed Buchwald: Isaac Newton and the Philosophy of Science | Lex Fridman Podcast #214

Disagreement with Thomas Kuhn on Scientific Progress

• Jed Buchwald rejects Kuhn's "paradigm shift" model as too neat or singular.
• Buchwald argues science progresses through "craftsmanship" where communities adapt frameworks gradually rather than through sudden ruptures caused by anomalies.
• He cites the wave theory of light as a counter-example: it did not succeed because the particle theory failed, but because the wave framework enabled the generation of new devices and mathematics (novelty) that the particle theory could not.
• The transition from Newtonian optics to wave optics allowed for the "manufacture" of new phenomena (e.g., polarization devices) rather than just explaining existing ones.

The Role of "Lone Genius" vs. Collaboration

• Buchwald acknowledges that shifts often hinge on one or two central figures (e.g., Newton, Galileo, Huygens) but rejects the idea that these individuals are solely responsible or that science would stop without them.
• He suggests that societal and mathematical contexts would eventually lead to similar discoveries, though perhaps not in the exact same form.
• History shows complex collaboration and competition; for instance, Christian Huygens (a central figure in 17th-century science) deployed Galilean motion concepts to invent the pendulum clock, a feat often overlooked compared to Newton.

The "Theory of Everything" and Limits of Science

• Buchwald identifies the "Theory of Everything" (unifying all physical laws) as a dream originating in the 1500s with alchemists, rather than modern physics.
• He contrasts the reductionist hope (understanding everything by reducing it to fundamental particles) with the reality that higher-level abstractions (chemistry, consciousness, society) require distinct explanatory levels not derivable solely from the standard model.
• He questions the trajectory of modern physics: he doubts that building larger, more expensive particle accelerators will yield further fundamental breakthroughs.
• Buchwald expresses skepticism about Steven Weinberg's claim that we have "arrived" at the ultimate truth of nature, arguing our access to reality is always mediated by our perceptual and instrumental constructs.

Perception, Reality, and the "Hard Problem"

• Using a laptop screen analogy, Buchwald argues that we never perceive raw reality; we only perceive constructs processed by our perceptual systems (light streams, digital signals).
• He identifies as a materialist, positing that consciousness arises from specific organizational structures of material elements.
• He remains agnostic on whether consciousness can be fully bridged from brain activity to subjective experience, noting that perception is subjective.
• He entertains the speculative hypothesis that consciousness might be a fundamental law of physics that permeates matter, which would imply bottled water possesses a low level of consciousness.

Isaac Newton: Biography and Methods

• Childhood & Personality: Newton was solitary, harbored resentment toward his stepfather and absent father, and was known as a child for making things (e.g., kites). He had no romantic relationships.
• Education: He attended Cambridge as a "subsizer" (a servant to wealthier students) and struggled with the traditional Aristotelian curriculum, preferring Descartes and the manipulation of artificial structures.
• The "Annus Mirabilis" (1666): During a plague lockdown, Newton stayed home and produced foundational work in calculus, optics, and gravity. Buchwald notes this was likely due to the unique privacy and freedom to experiment (e.g., modifying his room) rather than the isolation itself.
• Optics Experiments: Newton famously used a prism to prove white light is a mixture of colors, rejecting the Aristotelian view that colors are modifications of white light. He used "twiddling" techniques (manipulating the prism by hand) to bypass measurement inaccuracies.
• Alchemy: Newton was deeply invested in alchemy (chrysopoia), attempting to create "regulus" (shiny metals) and view matter as particles, a pursuit he considered central to his work.
• Controversies: He engaged in bitter feuds with Robert Hooke (over optics and gravity) and Gottfried Leibniz (over the invention of calculus).
• Calculus: Newton developed calculus (fluxions) to handle continuous change, using a dot notation still used today; he later published his mechanics (Principia) using geometric ratios rather than his algebraic calculus to avoid controversy and ensure rigor.

Data, Measurement, and Statistical Method

• Modern statistical averaging (e.g., the central limit theorem) was not part of 17th-century methodology; Newton and contemporaries like Huygens would publish a single, confident measurement rather than an average of multiple trials.
• Buchwald notes that early scientists often rejected the idea of publishing a range of values, viewing it as uncertainty in the scientist's ability to find "the right number."
• He critiques the over-reliance on statistics in modern science, suggesting that while it helps, it is not a panacea for epistemological flaws.

Newton's Religious and Theological Views

• Newton was a devout but non-Trinitarian anti-Trinitarian who believed the universe was created by a perfect, exacting "rulemaker" 6,000 years ago (based on Biblical chronology).
• He did not believe in miracles after Christ and viewed the study of nature as uncovering the precise laws of this deity, which did not act arbitrarily.
• His belief in a rational, orderly universe motivated his scientific pursuit.

Hypothetical: Newton Meeting Einstein

• Buchwald suggests that if transported to the modern era, Newton would be initially overwhelmed by the mathematical leaps between his time and Einstein's (space-time, relativity).
• He posits that with gradual exposure to modern technology (railroads, telegraphs, labs), Newton's intuitive grasp of mechanics and optics would allow him to eventually understand modern physics.
• The gap between Newton and Einstein is described as "huge," involving fundamental shifts in conception, not just a small extension of prior ideas.

The Nature of Genius

• Buchwald acknowledges "years of miracles" (Newton in 1666, Einstein in 1905) as real phenomena but attributes them to a complex mix of intrinsic cognitive abilities and extrinsic environmental factors.
• He cites an anecdote about an autistic woman with prodigious musical ability to illustrate how the human mind can sometimes "tune in" to specific aspects of reality with masterful precision, suggesting a biological basis for genius that evolution has produced.