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Here what we want to focus on in particular is the language of argument. We
need to understand the language of argument in order to be able to spot an
argument. That is to determine when a passage contains an argument and what part
of the passage is that argument. So, how can we tell when an argument is being
given? Well recall the definition of an argument as a series of sentences,
statements, or propositions, where some of them are premises and one of them is a
conclusion, and the premises are intended to give a reason for the conclusion. So
the real question of when an argument has been given comes down to the question of
when certain sentences are intended as reasons for other sentences. Now the
answer is that we can tell the person's intentions when they're speaking by which
words they choose. So there's going to be certain words that indicate that some
sentences are reasons for others. Just compare these two sentences. I am tall and
I am good at sports. And compare that to, I am tall, so I am good at sports. Now
notice that you can take the first sentence, I am tall and I am good at
sports, and switch it around. I am good at sports and I am tall. Switching doesn't
make any difference, but it's very different if you say, I am tall, so I am
good at sports. That's very different from, I am good at sports, so I am tall.
So we know from the fact that you can switch around the and sentence, and you
cannot switch around the so sentence. The word so introduces something very
different from just conjoining the two claims. But then what's the difference?
Well, the difference is that when you use the word, and, you're simply stating the
two facts. I am tall. I am good at sports, and the and says that they're both true.
But when you use the word, so, you're indicating that one of them is a reason
for the other. If you say, I am tall, so I am good at sports, then you're suggesting
that the reason why you're good at sports is that you're tall. But if you say, I'm
good at sports so. I am tall, then you're indicating that the fact that you're good
at sports is some kind of evidence that you must be tall. Maybe because you can
only be good at sports if you're tall, which isn't true. That just shows it's a
bad argument, but it is an argument. Because by using the word so, you're
indicating that one of the sentences is a reason for the other. Of course, the word,
so, is not the only word that plays this role in arguments, or has this function.
You can also say. I am tall, therefore I am good at sports. Or I am tall, thus I am
good at sports. Or I am tall, hence I am good at sports. Or I am tall, accordingly
I am good at sports. All of these different pairs of sentences. Play the
same role. They indicate that there's an argument there. Namely, the fact that I'm
tall is a reason for the conclusion that I'm good at sports. So we're going to call
all of these words argument markers, because they mark or indicate the presence
of an argument. Next we want to distinguish two different kinds of arguing
markers. So far, we've looked at so, and therefore, and thus, and accordingly. And
each of those indicates that the sentence right after it is a conclusion. And the
other sentence in the pair is a premise. So we're going to call these conclusion
markers because they indicate that the sentence right after them is a conclusion.
But there are other argument markers that also indicate arguments in the same way.
What they indicate is that the sentence after them is a reason, or a premise, not
a conclusion. For example, I can say, I'm good a sports because I am tall. Now the
word because indicates that the fact that I'm tall is a reason for the conclusion
that I'm good at sports. It doesn't mean that the sentence after the word because
is a conclusion. Instead, it means that the sentence after the word because, is a
reason, or a premise. So we're going to call it a reason maker, or a premise
marker. And there are other reason markers as well. You could say, I am good at
sports, for I am tall. I am good at sports as I am tall. I am good at sports f or the
reason that I am tall. I am good at sports and the reason why is that I am tall.
There are lots of different ways to indicate that the fact that I am tall is a
reason for the conclusion that I am good at sports. All of these words, both the
conclusion markers and the reason markers indicate that there is an argument
present. But only in some cases. You can't just look at the word and figure out
whether it's an argument marker or not. You have to think about the role that it's
playing. A perfect example of that is an other reason marker. Since. You can say, I
am good at sports since I am tall. And then it looks like you are presenting the
fact that you are tall as a reason why you're good at sports. But the word since
doesn't always play that role. After all you can say the Sun has been up since
seven o'clock this morning. And that doesn't mean that somehow the sun has an
alarm clock that causes it to come up right at seven o'clock. All it's saying is
that, the sun has been up after the time of seven o'clock. And all times since
then. It doesn't indicate any kind of rational relation, such as the fact that
it's seven o'clock being a reason why the sun came up. Or what about this one? It's
been raining since my vacation began. Very disappointing, but you're not saying that
it's raining because your vacation began, as if there's some kind of plot against
you in the nature of weather, and that would be very paranoid. All you're saying
is that, it has been raining every day since the time when your vacation began,
or every day after your vacation began. So the since there indicates just a temporal
relation, not some kind of rational relation. And what this shows us is that
you can't just look for the word since and always mark it as an argument marker. You
have to think about what the word since is doing in that context. And that'll be true
for a lot of other reason markers and conclusion markers as well. Here's another
example of the same point but with a conclusion marker. The word so. The word
so sometimes indicates that the sentence after it's a conclusion. And the sentence
before it's a reason. But it can also indicate something entirely different. You
don't need to eat so much. So there doesn't indicate that much is a reason for
anything. The word so is getting used in an entirely different way, that should be
obvious. But the point again is that you can't just look for the word so and label
it as an argument marker. You have to think about the function that it's playing
in the particular context. Unfortunately sometimes it's hard to tell whether a
particular word is being used as an argument marker or not. Here's an example.
Suppose someone says, the liberal party has been dropping in the polls since the
conservative party held their convention. And they might be saying, the liberal
party has been dropping in the polls. And all times after the conservative party
held their convention. But they might be saying something stronger. They might be
saying that the liberal party has been dropping in the polls because the
conservative party held their convention, or because of something that happened at
that convention. How can you tell whether this person means to be claiming simply a
temporal progression or some kind of reason for the drop in the polls? One
trick, that's very useful, is to try to substitute a different word. If their
claim means, pretty much, the same if they had said, the liberal party has been
dropping in the polls because the conservative party held it's convention,
then you're claiming there's a rational relation. But if you can't substitute
because for since, then the word since is not being used as an argument marker. Now
sometimes that's just going to be clear. When it's not clear, what are you going to
do? We can ask the person who's talking. You can say, well tell me, are you saying
that the Liberal Party has no following in the polls because of the Conservative
Party convention, or are you just saying that that's the time when they were
falling? They might be able to answer your question. Of course they still might not,
because sometimes it's just not clear. You simply have to try your best to figure out
what the person's saying, and if you can't figure it out, it might of course just be
because they're not clear. After all, many people speak very loosely. And then it's
hard for you to tell what they're saying. They might not even know themselves
exactly what they're saying. But a good test is whether you can substitute another
argument marker for the term that's unclear. That won't solve all your
problems, but when you can substitute an argument marker for a particular word,
that shows that, that word in this context is being used to indicate that something
is a premise, that gives a reason for something else which is the conclusion.
Namely, it shows that there's an argument being given in that passage. The one last
word that we have to talk about is that little word if. Sometimes it's linked with
the word then, in an if-then clause, which is also called a conditional. We'll talk a
lot about conditions later in this course. But for now I just want to make one point.
The word if might seem like an argument marker because it's often used in
arguments. For example, I might say, if I'm rich enough, I can buy a baseball
team. And I am rich enough, so I can buy a baseball team. Now, that would be an
argument. But if all I say is if I'm rich enough, I can buy a baseball team. When I
know I'm not rich enough, so I would never assert the if clause that says I am rich
enough, then that little if sentence is not being used to indicate an argument at
all. It's just saying, if I am rich enough then I can buy a baseball team. It's not
saying that I am rich enough and it's not saying that I can buy a baseball team. So
the word if by itself does not indicate an argument. It sets a pattern for argument,
if one thing then another, or the one thing therefore the other. But the if one
thing, then another, doesn't, by itself, indicate any argument at all, because it
doesn't assert that if clause which is also called the antecedent of the
conditional. So, we are not going to count the word if as an argument marker. Now
we've learned how to identify an argument. Pretty simple, huh? But just to make sure
you've got it straight, let's do a few exercises.