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Logic Exercises - Assignment # 1
Write an ostensive definition of "furniture.
Write an essential definition of "logic."
Write a stipulative definition of a "student in good standing."
Write an etymological definition of "geology."
Supply the missing premise:
Ed does whatever his advisor tells him to do,
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so Ed signed up for chemistry.
Supply the missing conclusion:
Students who don't even buy the textbook are obviously going to fail the course ,
and John didn't even bother to buy the textbook.
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For the following arguments, highlight the conclusions with red, the main premises with blue, and the premise support with yellow.
You should be sure to visit Yellowstone National Park. After all, it contains most of the geysers in the entire world. In fact, two-thirds of the world's geysers are in the Upper Geyser Basin, just one of the parks many geyser basins. Also, the Grand Canyon of the Yellowstone River is one of the wonders of the world. Finally, you are sure to see abundant wildlife. Just last year when I was there I saw bears, elk, bison, moose, and coyotes.
Many elementary schools have discontinued instruction in art and music. Art and music are regarded by some people as frills that take up time that should be spent on serious subjects such as math. This is a major mistake. Eliminating art and music alienates kids and causes them to view school as sheer drudgery. Also, art and music are just as serious and important as math, because it is art and music, not addition and subtraction, which make life worth living.
Since the 1950's scientists have observed the same characteristics in what they thought were different cancer cells and concluded that these traits must be common to all cancers. The characteristics in question include the facts that all cancer cells have certain nutritional needs, all can grow in soft agar cultures, all can seed new solid tumors when transplanted into experimental animals, and all contain drastically abnormal chromosomes.
It appears that suicide no longer repels us. The suicide rate is climbing, especially among blacks and young people. What's more, suicide has been appearing in an increasingly favorable light in the nation's press. When Paul Cameron surveyed all articles on suicide indexed over the past 50 years in the Reader's Guide, he found that voluntary death, once portrayed as a brutal waste, now generally appears in a neutral light. Some recent articles even present suicide as a good thing to do and are written in a manner that might encourage the reader to take his own life under certain circumstances. Last year, a majority of Americans under 30 told Gallup pollsters that incurable disease or continual pain confer on a person the moral right to end his life.