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Touchstones

The fourscore of touchstones in 30 philosophers.

Impermanence and Flux

30 Phil, Chapter 7, Heraclitus, Touchstone 17: Impermanence and Flux. Impermanence as Flux is the idea of an ever-changing nature of life and the interconnectedness of all things. It is summed up as: “Everything is in flux.” Like the idea a “river,” everything flows. The only constant is change, and to resist it is to resist

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Nondualism and Dualism

30 Phil, Chapter 6, Buddhism, Touchstone 16: Nondualism-Dualism. Nondualism and dualism help to explore the many variations and nuances within the overarching discussion of our nature, whether we have a soul, what happens to it, etc. Dualism says the mind and the body are distinct entities from each other and from the universe. How they interact

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Schemas

30 Phil, Chapter 5, Confucius, Touchstone 14: Schemas. A schema is a mental structure we employ to organize and interpret information. We classify things into schemas, which we can then modify by adding or removing elements. Schemas help us simplify life. Once things are categorized as normal or abnormal, we utilize our cognitive processes, such as

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Yin and Yang

30 Phil, Chapter 4, Laozi, Touchstone 11: Yin and Yang. Yin and Yang represents the dualistic nature of reality and the energies that constitute it. It is opposite yet complementary forces striving for dynamic equilibrium, symbolizing balance, harmony, and the interplay of light and dark, active and passive, male and female. This harmony is crucial

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Relativity Principle

30 Phil, Chapter 21, Galileo, Touchstone 52: Relativity Principle. The Relativity Principle states that the laws of physics are the same for all observers in uniform motion relative to one another. This means that the passage of time, the length of objects, and the speed of light are the same for everyone, regardless of their

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Holism

30 Phil, Chapter 3 Touchstone 8: Holism. Holism views things as a whole, emphasizing interconnectedness and interdependence, and values unity and synthesis. It is essential for fully understanding complex systems like living organisms and ecosystems. This notion of an underlying, unifying essence mirrors the intricacies of the natural world, where each element, though distinct, harmoniously contributes

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Ontology

30 Phil, Chapter 3 Touchstone 7: Ontology. Ontology: When we’re alive, life feels endless, stretching beyond the horizon of our imagination. The realization that it must end is not easily accepted. We’re not just sentient beings; we are self-aware. For many, the notion that we cease to exist after death is unbearable. We can’t help

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Philosophy

30 Phil, Chapter 2 Touchstone 6: Philosophy. Philosophy is the systematic study of fundamental questions concerning existence, knowledge, values, and meaning. It’s a discipline guided by reason and the evaluation of evidence. A central question is “How should we live?” While there is a general agreement on overarching principles, as always, the devil is in the

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Knowledge Framework

30 Phil, Chapter 2 Touchstone 5: Knowledge Framework. In philosophy, the study of knowledge is called epistemology. It’s important because knowledge describes reality, and understanding how we craft knowledge brings philosophical clarity. Each of us maintains a personal knowledge framework that arranges the knowledge we accumulate. You can think of it as a personalized dictionary. But

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Cultural Transmission

30 Phil, Chapter 1 Touchstone 4: Cultural Transmission. Cultural transmission, perhaps more than any other trait, sets humans apart from other animals. It’s the ability to pass behaviors, traditions, and knowledge to the next generation. Cultural transmission has likely been a feature of our direct-line hominin mind for millions of years. Returning to what we

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Evolution

30 Phil, Chapter 1 Touchstone 3: Evolution. In 1859, the naturalist Charles Darwin revolutionized the scientific world with his seminal publication, “On the Origin of Species.” In it he formulated his scientific theory of evolution by natural selection. The process by which new species arise is well-understood. It proposed that changes in species occur gradually over time. With each generation,

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Big Bang Expansion

30 Phil, Chapter 1 Touchstone 1 of 80: Big Bang. Immediately following the state of the singularity, the universe entered a phase of rapid expansion and cooling, known as the Big Bang Expansion. This critical period signifies not an explosion in space but the very expansion of space itself, from an incomprehensibly dense point known

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Olfaction or Sense of Smell Study.

The Five Senses of Humans

30 Phil, Chapter 17, Alhazen, Touchstone 42: Senses. How we perceive an external world starts to become clear about 1020 CE. Since Alhazen and his pioneering work around 1020 CE, we have made significant advancements in understanding our senses. Our direct impressions of the world. Prior to Alhazen, most people on Earth believed in strange

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