In this section only, assume that any claim printed in Purple is true as stated. In other words, if I write: The Eiffel Tower is in South Dakota. Pack your bags and head for sunny Pierre.
ALL DOGS DRIVE VOLVOS.
FRANK IS A DOG.
FRANK DRIVES A VOLVO.
Given the existence of our special condition about the truth of claims printed in red (see annoying blinking text above), one not only can conclude with confidence that Frank the Dog drives a Volvo, one's capacity to operate heavy machinery would be cast into doubt if one did not so conclude. That is because the statements provided are organized into what we can call a valid analytical form--in this case an "If-Then" statement wherein the first statement All dogs drive Volvos.--called the major premise--is provided as a broad immutable description of a population (in this case All Dogs). The second statement--the minor premise--describes a specific case within the influence of that general rule--Frank is a dog. The conclusion--Frank drives a Volvo.--is derived from the application of the major premise to the minor.
The problem that arises when we draw conclusions that we
believe are warranted by logical form when in fact they are not
is called a Logical Fallacy. For instance:
ALL DOGS DRIVE VOLVOS.
FRANK DRIVES A VOLVO.
FRANK IS A DOG.
Obviously, this conclusion does not follow from the the major and minor premises that precede it. If the major premise said ONLY DOGS DRIVE VOLVOS, then you would be secure in concluding that Frank is a dog.
Confused yet? Good. You have to develop an ear for these
things in order to guard against them. Always be careful to say
exactly what you mean, then be aware of the implications of what
you say.
How about a Test?
ONLY DOGS DRIVE VOLVOS.
FRANK IS A DOG.
Does Frank drive a Volvo? The correct answer is . . . Maybe.
There is insufficient information in the message to be sure. The
major premise says only dogs drive Volvos, but not that each dog
necessarily does.
The world of communication is repleat with logical fallacies, and
they have been well-documented. Go to one or more of the
following links to learn about the specific types:

If you'd like to make this eyesore go away, click on the icon below.
How is that? Better?
That was a fairly simple, and one would have to say, effective
message. You did what you were told, and you got what you wanted.
OR DID YOU?
Did it, in fact, go away?
Before you answer so positively, take a look at the URL of the page you are looking at now. Then hit the Icon below.
It's Back! Arrghh!!
Look at the URL again. See what I mean? It was never gone. YOU WERE GONE. The exploding Taunt was here all the time. You, on the other hand, were led down the information super highway to a rest stop outside Totowa and deposited in a place where everything was arranged to make you think you were satisfied.
In assuming that clicking the icon erased the exploding Taunt,
you committed what is called an Inferential Error.
What? You say. You've done nothing wrong? You've been unfairly
duped and lied to?
By whom? When?
Did I say clicking on the icon would in any way alter it?
No. Go look again. What I said was that if you want it to go
away, click the icon. That is not the same.
Let's clarify our terminology.
I IMPLIED that clicking the icon would erase
the exploding Taunt.
You INFERRED that I had stated that message
directly. You, in fact, responded to what you thought I said,
rather than what I said. That is an Inferential Error.
Have you ever heard of retread tires? They are tires on which the tread has worn down and a new one has been bonded in its place. They are significantly less expensive than new tires and--their advocates say--just as safe.
Are you convinced? If not consider the mythical Yellow Pages ad below (and remember, all claims made in purple can be considered true):

So, what do you think? Are there retreads in your future?
How are you responding to the content of the ad? Since you can
accept as true for the sake of discussion the claim that 75% of
all airlines in America use them, how have you factored that
information into your reasoning process?
If you are like the vast majority of people with whom I have
discussed this claim, your answer will sound like one of the
following:
Who cares? Airplanes only use their tires to take off and land. How much wear do they get?
Or
That's convincing. Take-off and landing would be rough on tires, and airlines are among the most heavily regulated industries in the world. If they can use them on airplanes, they must be okay on cars.
Which sounds familiar to you?
Great, but let me ask you one more question . . .
Who said anything about airplanes? Lyle said
"airlines."
They are probably used on baggage haulers and catering trucks,
but you'd have to be a lunatic to put retreads on a jet airplane!
Only you know if you have fallen victim to yet another devious exercise in faulty inference. People, deliberately or not, make ambiguous statements, and we--trying to make sense of the communication event--add our own material in order to reduce the ambiguity. If you hear that a cereal is "part of a balanced breakfast" and assume that the cereal is good for you; if you hear that "The next five hundred callers will get a free T-Shirt" and assume that the first caller after them will not; if you hear that "Nothing works better than Brand Q." and assume that Brand Q is the best, recognize that no one has assaulted you with those claims. You have made them yourself. The aforementioned Logical Fallacy Sites speak to inferential error. Or, if you'd like, jump to the link below and try your hand at sorting out an inferential mess of a story:
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To the extent that you appreciate this you have the opportunity to become a good critical listener.
Even if that is not literally true--I think it is--it is a good strategic way to define the event in your mind. This concept arose when we discussed audience analysis. But for now just recognize that the audience is talking to you while you speak. You need to be open to those signals, attend to them, and respond to them by altering your content and delivery accordingly.

The error is not accidently being unethical. The error is thinking you can get away with it. In the short term you might, but inevitably the cost to your credibility--and for that matter to the whole vital structure of public dialogue--will far outweigh the immediate gain.
Let's not get all weepy here. We can keep it simple.
The biggest source of delivery malfunction you will have results from what is commonly called "Stage Fright" or "Speech Anxiety." Jump to the following link to address that problem in detail.
There are, however, other common delivery problems to address. Let's do so.
"prum-puddledy-puddledy-prum..."
You felt like an idiot, but from the audience, it all melded together and sounded a lot like music. The major difference between talking and talking to groups of people is one of distance. You have to push it a little harder--that's all. That takes practice, but it is not hard.
Let me reassure you. You are not likely to do something in your speaking career to humiliate yourself monumentally .
You are CERTAIN to do something in your speaking career to humiliate yourself monumentally .
Comfort yourself with the following truths:
In the face of this category of disaster, you have three basic options:
All of these measures are preferable to collapsing in a heap and sobbing uncontrollably. What you do not want to do is launch into a self-indulgent, pathos laden narrative on how bad your life has been lately.
I can virtually guarantee that this will inflame, not lessen the audience's disregard for you. The most important thing is to project to the audience the truth--that these things happen, and that what is really important is getting on with it.
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