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     UFOs – Unidentified Flying Objects

     Ufology –            is a neologism coined to describe the collective
     efforts of those who study reports and associated evidence of
     unidentified flying objects (UFOs).




     Ufologist –            A ufo investigator is called a ufologist




     Ufo Sightings-               Some eye witnesses to the UFOs




     Roswell Incident- called the Roswell UFO crash
     1947




     UFO Conspiracy – Worldwide UFO cover Ups and
     related theories




     Alien- An extra-terrestrial being is called an alien
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                      The Nature and Scope of Logic
Note: The examples are reprinted from With Good Reason: An Introduction to Informal
Reasoning by S. Morris Engel (St. Martin’s Press, 1986). Many of the explanations come from
the same source.

      Logic is the study of argument. Not “argument” in the sense of a quarrel,
but an “argument” in the sense of a piece of reasoning in which one or more
statements are offered as support for some other statements.

There are two components of an argument: the premise(s) and the conclusion(s)

       conclusion- the statement being supported in the argument
             (generally preceded by words like therefore, hence, consequently etc.)

       premise- the reasons given in support of the conclusion
            (generally preceded by words like because, for, since etc.)

       “This is so (conclusion) because that is so (premise).”

       “This is so and this is so (premises), therefore that is so (conclusion).”



Exercises: Distinguish between the premise(s) and conclusion by marking them.

       * There are no UFOs in the area. We haven’t seen one all day.

       * All Democrats oppose capital punishment; Senator Wellstone opposes it;
             he must be a Democrat.

       * Since all rational beings are responsible for their actions, and since all
             human beings are rational, it follows that all human beings are
             responsible for their actions.

       * Tom must have left already. He doesn’t answer his phone.

       * Smith ought to exercise more. It would be good for his condition.
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       Many types of communications are not arguments. Questions are not
arguments, nor are announcements, complaints, compliments, or apologies. Such
communications are not arguments because they make no effort to persuade by
offering reasons in support of their claims. This does not mean that such passages
are bad arguments; it simply means that they are not arguments at all. They fulfill
other legitimate, and often necessary, functions.


Exercises: Label whether each of these are “arguments” or “non-arguments”.

      * Back in the 1980s there was an actor named Gary Coleman. I believe he
      was a short guy. I think he was popular for a couple of years. What
      happened to him? “Argument” or “non-argument”?

      * The main issue is life is not the victory but the fight. The essential thing
      is not to have won but to have fought well. (Baron Coubertin, founder of the
      modern Olympics. “Argument” or “non-argument”?

      * You shouldn’t have legislation against a thing that the majority of the
      population does. And today the majority speeds. Speeding should be
      legalized. “Argument” or “non-argument”?

       In the context of argument, an element is “suspect” if it is made to carry
more weight that it is capable of doing. We need to ask such questions as: Are the
facts cited in support of a conclusion sufficient as such in support? Are they
relevant? Are the illustrations apt? To what degree? Is the wording clear so that
we know what the author intends? The following exercises will consider “suspect
elements”.


Exercises: Read each quote and briefly answer the question that follows.

      * In a press conference on May 13, 1982 President Reagan said the
      following regarding missiles carried by submarines and bombers: “You are
      dealing there with a conventional type of weapon or instrument, and those
      instruments can be intercepted. They can be recalled if there has been a
      miscalculation.”

            Was Reagan referring to the submarines or missiles when he said
            “they”?
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             What did his critics contend? What do you think Reagan claimed?


      * When on September 27, 1984, a terrorist zig-zagged an explosive-laden
      truck around concrete barriers and set off a blast that once again killed
      many people at the still unfinished and poorly secured American embassy in
      Beirut, President Reagan responded as follows to critics: “Anyone that’s
      ever had their kitchen done over knows that it never gets done as soon as
      you wish it would.”

             Is this an apt illustration? Is the analogy meaningful? Inappropriate?


      * You shouldn’t have legislation against a thing that the majority of the
      population does. And today the majority speeds. So speeding should be
      legalized.

             Is it really the case that we should not have legislation against
             something the “majority does”? Would this apply if the majority
             were prejudiced?


       An argument’s structure may be misleading or deceptive because it has
missing components. Such arguments may appear sounder that they are because
we are unaware of important assumptions made by them and on which they rest.
Such assumptions need to be dug out, if hidden, or made explicit, if unexpressed.
       It will be easier to find missing components of an argument if we remember
that many arguments consist of a statement of a general principle, the citing of a
case of it, and a conclusion which infers that what is true of the general principle is
true of the case in question. Consider this classic example:

             All men are mortal. (the general principle)

             Socrates is a man. (the case)

             Socrates is mortal. (the conclusion)
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Exercises: Supply the missing elements in these arguments. If you can, identify
which “part” of the argument was missing (i.e. general principle, case, or
conclusion).

      * These are natural foods and therefore good for you.


      * “Yon Cassius has a lean and hungry look; such men are dangerous.”


      * This must be a good book; it was chosen by the Book-of-the-Month-Club.


      * The speaker criticizes free enterprise; he must be a communist.


      * We do not want a democracy in this land, because if we have a democracy
      a majority rules. (Rev. Charles Staley)



A question to consider: Is logic an art or a science?




This is enough for now. Try to have this done for the next class session, and
we will discuss the examples.

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A little logic

  • 1. Created by Simpo PDF Creator Pro (unregistered version) http://www.simpopdf.com UFOs – Unidentified Flying Objects Ufology – is a neologism coined to describe the collective efforts of those who study reports and associated evidence of unidentified flying objects (UFOs). Ufologist – A ufo investigator is called a ufologist Ufo Sightings- Some eye witnesses to the UFOs Roswell Incident- called the Roswell UFO crash 1947 UFO Conspiracy – Worldwide UFO cover Ups and related theories Alien- An extra-terrestrial being is called an alien
  • 2. Created by Simpo PDF Creator Pro (unregistered version) http://www.simpopdf.com The Nature and Scope of Logic Note: The examples are reprinted from With Good Reason: An Introduction to Informal Reasoning by S. Morris Engel (St. Martin’s Press, 1986). Many of the explanations come from the same source. Logic is the study of argument. Not “argument” in the sense of a quarrel, but an “argument” in the sense of a piece of reasoning in which one or more statements are offered as support for some other statements. There are two components of an argument: the premise(s) and the conclusion(s) conclusion- the statement being supported in the argument (generally preceded by words like therefore, hence, consequently etc.) premise- the reasons given in support of the conclusion (generally preceded by words like because, for, since etc.) “This is so (conclusion) because that is so (premise).” “This is so and this is so (premises), therefore that is so (conclusion).” Exercises: Distinguish between the premise(s) and conclusion by marking them. * There are no UFOs in the area. We haven’t seen one all day. * All Democrats oppose capital punishment; Senator Wellstone opposes it; he must be a Democrat. * Since all rational beings are responsible for their actions, and since all human beings are rational, it follows that all human beings are responsible for their actions. * Tom must have left already. He doesn’t answer his phone. * Smith ought to exercise more. It would be good for his condition.
  • 3. Created by Simpo PDF Creator Pro (unregistered version) http://www.simpopdf.com Many types of communications are not arguments. Questions are not arguments, nor are announcements, complaints, compliments, or apologies. Such communications are not arguments because they make no effort to persuade by offering reasons in support of their claims. This does not mean that such passages are bad arguments; it simply means that they are not arguments at all. They fulfill other legitimate, and often necessary, functions. Exercises: Label whether each of these are “arguments” or “non-arguments”. * Back in the 1980s there was an actor named Gary Coleman. I believe he was a short guy. I think he was popular for a couple of years. What happened to him? “Argument” or “non-argument”? * The main issue is life is not the victory but the fight. The essential thing is not to have won but to have fought well. (Baron Coubertin, founder of the modern Olympics. “Argument” or “non-argument”? * You shouldn’t have legislation against a thing that the majority of the population does. And today the majority speeds. Speeding should be legalized. “Argument” or “non-argument”? In the context of argument, an element is “suspect” if it is made to carry more weight that it is capable of doing. We need to ask such questions as: Are the facts cited in support of a conclusion sufficient as such in support? Are they relevant? Are the illustrations apt? To what degree? Is the wording clear so that we know what the author intends? The following exercises will consider “suspect elements”. Exercises: Read each quote and briefly answer the question that follows. * In a press conference on May 13, 1982 President Reagan said the following regarding missiles carried by submarines and bombers: “You are dealing there with a conventional type of weapon or instrument, and those instruments can be intercepted. They can be recalled if there has been a miscalculation.” Was Reagan referring to the submarines or missiles when he said “they”?
  • 4. Created by Simpo PDF Creator Pro (unregistered version) http://www.simpopdf.com What did his critics contend? What do you think Reagan claimed? * When on September 27, 1984, a terrorist zig-zagged an explosive-laden truck around concrete barriers and set off a blast that once again killed many people at the still unfinished and poorly secured American embassy in Beirut, President Reagan responded as follows to critics: “Anyone that’s ever had their kitchen done over knows that it never gets done as soon as you wish it would.” Is this an apt illustration? Is the analogy meaningful? Inappropriate? * You shouldn’t have legislation against a thing that the majority of the population does. And today the majority speeds. So speeding should be legalized. Is it really the case that we should not have legislation against something the “majority does”? Would this apply if the majority were prejudiced? An argument’s structure may be misleading or deceptive because it has missing components. Such arguments may appear sounder that they are because we are unaware of important assumptions made by them and on which they rest. Such assumptions need to be dug out, if hidden, or made explicit, if unexpressed. It will be easier to find missing components of an argument if we remember that many arguments consist of a statement of a general principle, the citing of a case of it, and a conclusion which infers that what is true of the general principle is true of the case in question. Consider this classic example: All men are mortal. (the general principle) Socrates is a man. (the case) Socrates is mortal. (the conclusion)
  • 5. Created by Simpo PDF Creator Pro (unregistered version) http://www.simpopdf.com Exercises: Supply the missing elements in these arguments. If you can, identify which “part” of the argument was missing (i.e. general principle, case, or conclusion). * These are natural foods and therefore good for you. * “Yon Cassius has a lean and hungry look; such men are dangerous.” * This must be a good book; it was chosen by the Book-of-the-Month-Club. * The speaker criticizes free enterprise; he must be a communist. * We do not want a democracy in this land, because if we have a democracy a majority rules. (Rev. Charles Staley) A question to consider: Is logic an art or a science? This is enough for now. Try to have this done for the next class session, and we will discuss the examples.