MODR 1711 Lecture 4: 7 October 2015

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7 Oct 2015

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An argument is an appeal to evidence in order to prove or show the truth or a particular idea. Arguments must contain at least one implied or stated conclusion. These are the claims or claim that the argument is trying to prove. Arguments also contain at least one premise. Premises are the propositions that give support or evidence for the conclusion. Diagramming is a way for us to show how the premises and conclusion(s) of an argument are connected. The first step is to identify the propositions that make up an argument and assign them numbers. For example: (1) greater and easier access to guns has been shown to increase gun related fatalities. (2) we can all agree that fatalities are bad and that we should decrease fatalities if we can. Therefore, (3) we should limit access to guns and (4) endorse government regulations on gun ownership and use.

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For example, consider the following argument:
"Measles can't be cured by antibiotics, since Measles is caused by a virus, and antibiotics can't cure a viral infection."

We can see that the argument contains the word "since," which is a premise indicator. We know that what follows "since" will be the premises. We also know, through the process of elimination, that what precedes the word "since" is the conclusion. So my standardized argument will look like this:

1) Measles is caused by a virus. 2) Antibiotics can't cure a viral infection. therefore, 3) Measles can't be cured by antibiotics.

Now we can see the relationship of support between the premises and conclusion. We are asked to accept the conclusion, "Measles can't be cured by antibiotics," based on the two supporting premises. Notice that all of the premises and the conclusion are statements, that is, complete sentences that are either true or false. Also, notice that the premise indicator "since" has been omitted. We always omit premises and conclusion indicators when putting arguments into standard form and make sure that the components of our argument are statements, that is, complete sentences that are either true or false.

For credit on this assignment, do the following:

1) Put the following arguments into standard form:

a) "All dogs are carnivores, consequently, Max is a carnivore, for the reason that Max is a dog."

b) "Rebecca does not pray at the mosque, for she is not a Muslim and only Muslims pray at the mosque."

c) "To every existing thing God wills some good. Hence, since to love any thing is nothing else than to will good to that thing, it is manifest that God loves everything that exists."

2) Create your own argument:

a) Construct an argument of your own using two different premise indicators and one conclusion indicator with the following conclusion: "Now, more than ever, everyone needs to take a class in logic."

b) Then put the argument into standard form.

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A statement that is necessarily false, or a group of statements that, taken together, are inconsistent. A) Division B) Suppression C) Questionable Cause D) Contradiction 2. An attack on oneâs opponent rather than oneâs opponentâs argument. A) Faulty Comparison B) Categorical Proposition C) False Dilemma D) Ad Hominem Argument 3. Consciously believing at a deeper level what we know to be dubious. A) Mood B) Conclusion C) Self-Deception D) Irrelevant Reason 4. A limited perspective shaped by the ideas, interests, and kinds of behavior favored by the groups with which we identify. A) Provincialism B) Delusional C) Composition D) Tokenism 5. Drawing conclusions about a population on the basis of a sample that is too small to be a reliable measure of that population. A) Minor Term B) Small Sample C) Suppressed Evidence D) Rationalization 6. Is the following argument valid or invalid? If valid, explain whether it is deductive or inductive. If invalid, explain why: âMr. Michaels believes that he is the only person on the ballot capable of running our town. He says so time and again in his campaign speeches and ads. What he fails to mention is that he is an alcoholic womanizer with no scruples. Who in their right mind could vote for that?â HTML Editor 7. The fallacy in which it is assumed parts of an item have a particular property because the item as a whole has that property. A) Premise B) Indirect Proof C) Division D) Unrepresentative Sample 8. The fallacious drawing of a conclusion from relevant but insufficient evidence. A) Appeal to Authority B) Hasty Conclusion C) Loyalty D) Middle Term 9. Valid reasoning from justified (warranted) premises that include all likely relevant information. A) Guilt by Association B) Indirect Proof C) Cogent Reasoning D) Contradiction 10. A comparison of one thing to another based on a perceived similarity. A) Indirect Proof B) Analogy C) Two Wrongs Make a Right D) Questionable Cause 11. Is the following argument valid or invalid? If valid, explain whether it is deductive or inductive. If invalid, explain why: âMrs. Kelvin has accused me of intentionally denting her rear fender. I neither confirm nor deny this, however in telling her story she leaves out an important point. As we were both leaving our driveways that morning, I backed onto the street first. She saw this and then deliberately pulled in front of my vehicle as I was preparing to continue down the street. Mrs. Kelvin intended to cut me off, so what happened to her car was entirely her fault.â HTML Editor 12. Is the following argument valid or invalid? If valid, explain whether it is deductive or inductive. If invalid, explain why: âAfter careful consideration, it is the determination of the board that free soda will no longer be provided in the break room. Before making this decision, a survey was distributed amongst all members of the upper management to determine their opinion on the matter. Based on the majority of responses, it was evident that withdrawing the free soda will not have any significant negative effect on morale.â HTML Editor 13. Use of a term in a passage to mean one thing in one place and something else in another. A) Cogent Reasoning B) Superstition C) Equivocation D) Inconsistent

What exactly was Hooker's response to Darwin's, Origin of Species? Thank you for your help. I need help deciphering what his opinions truly were.

Hooker, J. D. 1859. [Review of] On the origin of species. Gardeners' Chronicle (31 December): 1052. Part 1.

From the above expressions it will be inferred that we have risen from the perusal of Mr. DARWIN'S book much impressed with its importance, and have moreover found it to be so dependent on the phenomena of horticultural operations, for its facts and results, and so full of experiments that may be repeated and discussed by intelligent gardeners, and of ideas that may sooner fructify in their minds than in those of any other class of naturalists, that we shall be doing them (and we hope also science) a service by dwelling in some detail upon its contents. Thus much we may premise, that it is a book teeming with deep thoughts on numberless simple and complex phenomena of life; that its premises in almost all cases appear to be correct; that its reasoning is apparently close and sound, its style clear, and we need hardly add its subject and manner equally attractive and agreeable; it is also a perfectly ingenuous book, bold in expressions as in thought where the author adduces what he considers clear evidence in his favour, frank in the statement of objections to the hypotheses or conclusions founded on its facts and reasonings; and uniformly courteous to antagonistic doctrines. In fine, whatever may be thought of Mr. DARWIN'S ultimate conclusions, it cannot be denied that it would be difficult in the whole range of the literature of science to find a book so exclusively devoted to the development of theoretical inquiries, which at the same time is throughout so full of conscientious care, so fair in argument, and so considerate in tone. . . . Hitherto most [naturalists] have, as we have already observed, contented themselves with the hypothesis that they were independently created, and the minority have clung to the only other explanation hitherto conceived, that they have all been created by variation from a single first-created living organism, or a few such. Now it must be borne in mind that both these views are mere hypotheses in a scientific point of view; neither has any inherent or prescriptive right to a preference in the mind of the impartial inquirer; but the most superficial observation will show that the hypothesis of original creations is incapable of absolute proof, except the operation be witnessed by credible naturalists, and can only be supported by facts that are either not conclusive against the opposite doctrine, or may be regarded as equally favourable to it; and this hypothesis is hence placed at a disadvantage in comparison with that of the creation of species by variation, which takes its stand on the familiar fact that species do depart from the likeness of their progenitors, both in a wild and domestic state. On the other hand the hypothesis of creation by variation labours under the disadvantage of being founded upon a series of phenomena, the action of each of which individually, as explained by Mr. DARWIN, would appear to prevent the possibility of species retaining their characters for any length of time, and it therefore appears at first sight opposed to the undisputed fact, that many hundreds of animals and plants have transmitted their characters unchanged (or nearly so) through countless generations, and covered, even within the historic period, many square miles of country each with millions of its exact counterpart. To explain this anomaly and to raise this hypothesis of creations by variation to the rank of a scientific theory, is the object of Mr. DARWIN'S book, and to do this he has endeavoured to invent and prove such an intelligible rationale of the operation of variation, as will account for many species having been developed from a few in strict adaptation to existing conditions, and to show good cause how these apparently fleeting changelings may by the operation of natural laws be so far fixed as to reconcile both the naturalist and the common observer to the idea, that what in all his experience are immutable forms of life may have once worn another guise. The hypothesis itself is a very old one; it was, as all the world knows, strongly advocated by LAMARCK, and later still by the author of the "Vestiges of the Natural History of the Creation," but neither of these authors were able to suggest even a plausible method according to which Nature might have proceeded in producing suitable varieties, getting rid of intermediate forms, and giving a temporary stability to such as are recognised as species by all observers. Mr. DARWIN has been more successful, though whether completely so or not the future alone can show. We shall proceed to examine his method in another article.

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MODR 1711 Lecture 4: 7 October 2015

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