Systems Of Equations
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SARS, avian influenza and swine flu are the first new diseases of the twenty-first century. They are all diseases of globalization, or diseases of modernity, and while relatively limited in their impact, they have offered dress-rehearsals for future epidemics. As information about SARS spread internationally in 2002, in spite of China's campaign of silence, the global response had a curiously twofold character: on one hand, the...more
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In this lecture, Professor Diamond continues her discussion of human muscle systems by describing the muscles of the arm and forearm as well as the abdominal muscles. She begins by describing the origin and insertion of the tricep and brachioradialis. She discusses forearm muscles generally, grouping them into flexors and extensors. Next, Professor Diamond describes four abdominal muscles, relating their names to the ways in which they...more
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Professor Diamond continues her discussion of human muscle systems, addressing muscles of the trunk and upper extremity. Professor Diamond begins by discussing the trapezius, its origin and insertion, and how this relates to its function as an adductor. She encourages students to engage in self-study in order to grasp muscular form and function. She then explains the origin and insertion of the latissimus dorsi, pectoralis major, and...more
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In this lecture, Katie Brakora, the head GSI, introduces the course and the required texts and discusses strategies for success in studying human anatomy. She encourages students to take a systemic view of human anatomy, understanding systems in whole and in part, rather than focusing on memorizing terms. After this introduction, Brakora discusses the attributes of the human brain using a preserved sample. Then, Brakora surveys the...more
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Estrin talks about the personal connectivity cycle. The cycle of connecting people is the notion of people being able to connect to each other and connect to information anywhere. This means true mobility and ubiquitous, high bandwidth connectivity, she says. The enablers of this cycle are economic and behavioral. From an IT demand perspective, she explains, the real win is in the consumer devices and services and not in the IT...more
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Options introduce an essential nonlineary into portfolio management. They are contracts between buyers and writers, who agree on exercise prices and dates at which the buyer can buy or sell the underlying (such as a stock). Options are priced based on the price and volatility of the underlying asset as well as the duration of the option contract. The Black-Scholes options pricing model is one of the most famous equations in finance and...more
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This lecture explains what an economic model is, and why it allows for counterfactual reasoning and often yields paradoxical conclusions. Typically, equilibrium is defined as the solution to a system of simultaneous equations. The most important economic model is that of supply and demand in one market, which was understood to some extent by the ancient Greeks and even by Shakespeare. That model accurately fits the experiment from the...more
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Professor Kagan discusses in detail the argument of free will as proof for the existence of an immaterial soul. The argument consists of three premises: 1) We have free will. 2) Nothing subject to determinism has free will. 3) All purely physical systems are subject to determinism. The conclusion drawn from this is that humans are not a purely physical system; but Professor Kagan explains why this argument is not truly compelling. In...more
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Andy Friere, Co-founder and CEO of Axialent, describes the one-team culture archetype, one of the five basic cultural archetypes into which organizations fall: 1) Achievement, 2) Innovation, 3) One-team, 4) People-first or 5) Customer-focused. Specifically, Friere suggests that one-team cultures trade off the optimization of individual systems or people for the benefit of the entire organization. Friere describes the behaviors, symbols...more
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In 1989, following the year when Dell, Inc. went public, Dell explains how the company had a large problem with inventory management. As a result, the company failed to transition properly in the industry from one technology to the other. However, because of this critical mistake, the company learned how to correctly manage their inventory, and according to Dell, became the best in the world at it. Later on, Dell also notes the company...more
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Conscious of the Present; Conscious of the Past: Language (cont.); Vision and Memory
Yale / Psychology
This lecture finishes the discussion of language by briefly reviewing two additional topics: communication systems in non-human primates and other animals, and the relationship between language and thought. The majority of this lecture is then spent on introducing students to major theories and discoveries in the fields of perception, attention and memory. Topics include why we see certain visual illusions, why we don't always see...more
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Musk talks about how there's no one area where costs were reduced in space travel, rather it was every decision across the board. The focus was on simplicity--and simplicity reduces costs. For example, fewer components means fewer components to repair, and to purchase, as well as to test. The avionics vehicles communicate via ethernet--while not novel, it is unheard of, compared to other systems that use cables, he says. In addition,...more
