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TTC Video - Redefining Reality

TTC Video - Redefining Reality
Ganer : Elearning | Duration : 18h | Size : 6.97 GB



No subject is bigger than reality itself, and nothing is more challenging to understand, since what counts as reality is undergoing continual revision and has been for centuries. For example, the matter that comprises all stars, planets, and living things turns out to be just a fraction of what actually exists. Moreover, we think that we control our actions, but data gathering systems can predict, with astonishing accuracy, when we will get up in the morning, what items we will buy, and even whom we will marry.
The quest to pin down what's real and what's illusory is both philosophical and scientific. At its core, it is nothing less than the metaphysical search for ultimate reality that goes back to the ancient Greeks. And for the last 400 years, this search has been increasingly guided by scientists, who create theories and test them in order to define reality and then redefine it as new theories replace old.

In physics, biology, psychology, economics, and many other fields, defining reality is a task that needs frequent updates. Consider these once solid facts that were later thrown into doubt:

Space and time: Nothing is more real to us than our experience of space and time, which is why one of the greatest revolutions in human thought is Einstein's discovery that these two seemingly stable features of the universe are surprisingly fluid in ways that defy common sense.
Matter: It seems obvious that matter down to the smallest scale should have measurable properties: it's either here or there, it's spinning this way or that. But quantum mechanics shows that subatomic particles are in many places and states at the same time - until you measure them.
Mathematics: What could be more ironclad than the truths of mathematics? Yet in the 1930s, Kurt Godel showed that the field was built on shifting sands - that no set of axioms designed to serve as the foundation of mathematics could be both self-consistent and complete.
Life-giving sun: Plants need sunlight; animals eat plants or other animals; therefore all life on Earth ultimately depends on the sun. This seemed indisputable, until scientists discovered colonies of life in the dark ocean depths, feeding on mineral-rich hot fluids from volcanic vents.
When faced with reversals such as these, it's tempting to give up and conclude that nothing will ever be certain. But there's a more rewarding way to look at it, which is that every successful new theory is an improvement on its predecessor, drawing the net ever more tightly around reality, whose form is gradually coming into focus.

Redefining Reality: The Intellectual Implications of Modern Science gives you the thrill of this exciting quest in 36 wide-ranging lectures that touch on many aspects of the ceaseless search for reality, both scientific and philosophical. From the birth of the universe to brain science, award-winning Professor of Philosophy Steven Gimbel of Gettysburg College shows that separating the real from the illusory is an exhilarating intellectual adventure.

And since dealing with reality is an experience we all share, this course is designed for people of all backgrounds. No prior training in science or philosophy is assumed. Furthermore, the richness of Professor Gimbel's presentation assures that even those who have studied this problem in depth will find new connections and unexpected insights. Dr. Gimbel's thoroughness makes Redefining Reality an unrivaled introduction to key themes in the history of science and philosophy.

The How and Why of Reality

You begin with the contrasting views of two of the most influential philosophers who ever lived: Plato and Aristotle. According to Plato, reality resides in an abstract world of forms that can only be perceived by the mind; while for Aristotle, reality is right here in this world. It was this elevation of the material realm by Aristotle that launched what we think of as science.

Science was part of philosophy until the 16th and 17th centuries. The turning point came with Isaac Newton's laws of motion and principle of universal gravitation, which showed that the world is governed by natural laws. Newton's supremely successful mathematical theory established science as a separate mode of inquiry and provided a model for the ambitions of all future scientists. Henceforth, science was devoted to explaining how the world works. Speculation about why it works the way it does remained the province of philosophy.

A striking case of when a philosophical subject suddenly became scientific occurred in 1965, with the discovery of the fossil radio signal from the big bang, the moment when the universe can be said to have begun. Before this discovery, the notion of a beginning to time was largely theological. After, it was a scientific problem that could be quantified and explored in detail. In Redefining Reality, you examine scores of similar examples of reality in transition, including these:

Ghost in a machine: Traditionally, doctors saw the human body as a closed system inhabited by a soul - a "ghost in a machine." The discovery of disease-causing microbes led to a new paradigm: the body as a fortress under attack. Today there's a revised view: microbes are considered crucial to human life.
Economics: Newton's success in physics inspired the field of economics. But attempts to predict the complexities of production, consumption, and trade defied exact mathematical analysis. Recent theories have revised our view of economic reality by factoring in the human tendency for irrational economic choices.
Artificial intelligence: Can machines think? One current view is that a machine capable of human-like responses to questions would indeed have a mind. But philosopher John Searle's famous "Chinese Room" thought experiment suggests that the imitation of outward behavior is not enough to constitute a mind.
Free will: One outcome of today's revolution in big data is that computers can now predict what individuals will do in many situations, including who is likely to commit a crime. These techniques challenge the age-old belief that we have free will - that our actions are the result of deliberate personal choices.
The Art of Reality

Scientists and philosophers are not alone in grappling at an intellectual level with reality. Some of the most accessible interpretations are by painters, novelists, filmmakers, and other artists, whose works not only draw on the latest discoveries but also sometimes inspire them. Professor Gimbel includes examples in practically every lecture, such as the following:

Alice in Wonderland: Written by mathematician Charles Dodgson (whose pen name was Lewis Carroll), Alice's adventures can be read as an investigation of the paradoxical worlds that are possible when logic is set loose. Wonderland represents the death of the rationalist project.
Pointillism, cubism, and surrealism: These new modes of representation in the visual arts arose concurrently with the triumph of the atomic theory of matter and the radical new picture of reality offered by relativity and quantum mechanics.
Reality TV: The legacy of Darwin and his successors pervades one of modern media's most popular genres: reality television. From Survivor to Top Chef, these unscripted shows illustrate such Darwinian ideas as survival of the fittest and creative adaptation.
Hybrids and chimeras: Ancient myths spanning many cultures depict winged horses, minotaurs, mermaids, griffins, and other impossible crosses between different creatures. These stories prefigure today's real hybrids produced by genetic engineering.
A distinguished teacher, scholar, and author, Professor Gimbel has a gift for giving clear and concise explanations of concepts that can be notoriously difficult, such as special and general relativity, the Heisenberg uncertainty principle, Godel's incompleteness theorem, chaos theory, and string theory. He also has a detective's instincts for connecting the dots, marshaling evidence to spotlight historical trends. One trend that you will learn about in Redefining Reality is the gradual redefinition of humans, for we have developed the power to alter our own reality in major ways - to defeat diseases, compensate for disabilities, enhance our mental well-being, and augment our intellect with computers. Where is that trend going? Take this fascinating course to find out.

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