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Not to be confused with Possibilism .
“Three passions, simple but overwhelmingly strong, have governed my life,” wrote Bertrand Russell in the prologue to his autobiography: “the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind.” This five minute video, a preview of a three-part series produced in 2005 for Ontario public television called “ The Three Passions of Bertrand Russell ,” features a recording of Russell reading passages from the prologue, entitled “What I Have Lived For.” You can read the original text at the Bertrand Russell Society, an excellent online resource, that also makes available free books by Russell, including:
Quid est enim tempus?
Two monster black holes may lie within the double bright area at the center of galaxy NGC 6240. If, when I was growing up, my room had been adorned with only a single mirror, my childhood daydreams might have been very different. But it had two. And each morning when I opened the closet to get my clothes, the one built into its door aligned with the one on the wall, creating a seemingly endless series of reflections of anything situated between them.
This lecture explores issues and ideas related to the branch of psychology known as cognitive development. It begins with an introduction of Piaget who, interested in the emergence of knowledge in general, studied children and the way they learn about the world in order to formulate his theories of cognitive development.
Homosexual behavior in animals refers to the documented evidence of homosexual and bisexual behavior in various (non-human) species. Such behaviors include sex , courtship , affection , pair bonding , and parenting among same-sex animal pairings. Homosexual behavior has been observed in close to 1,500 species, ranging from primates to gut worms , and is well documented for 500 of them. [ 1 ] [ 2 ] Animal sexual behaviour takes many different forms, even within the same species .
What existed before the big bang? What is the nature of time?
S ometime this century, machines will surpass human levels of intelligence and ability. This event—the “intelligence explosion”—will be the most important event in our history, and navigating it wisely will be the most important thing we can ever do. Luminaries from Alan Turing 1 and I. J. Good to Bill Joy and Stephen Hawking have warned us about this. Why do I think Hawking and company are right, and what can we do about it?
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Equating evolution with Charles Darwin ignores 150 years of discoveries, including most of what scientists understand about evolution. Such as: Gregor Mendel’s patterns of heredity (which gave Darwin’s idea of natural selection a mechanism — genetics — by which it could work); the discovery of DNA (which gave genetics a mechanism and lets us see evolutionary lineages); developmental biology (which gives DNA a mechanism); studies documenting evolution in nature (which converted the hypothetical to observable fact); evolution’s role in medicine and disease (bringing immediate relevance to the topic); and more.