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11) Delivery

During your presentation you need to:

- maintain eye contact with the audience,

- use natural hand gestures,

- keep body movement quiet and natural,

- maintain appropriate voice volume,

- avoid wearing distracting clothing or accessories,

- maintain a constant rate of speech,

- nervousness is to be expected, just turn it into enthusiasm,

- establish contact with the audience, talk to them before actual pres­entation,

- walk purposefully and confidently to the front of the lecture room,

- concentrate your full attention on what you say.

12) Time and focus

Know how long you have and fit into that time frame. The only way for that is to be ruthlessly selective and talk only about that which is essen­tial.

Think of the talk as a kind of verbal abstract in which you want to give a clear picture of the issue, and not go into too many technical details. Make your central point clear, explain it, but also repeat it from time to time rephrased to keep the listeners' attention focused.

7.3. Scientific discussion - argumentation and contra argumentation

Situations in which engineers finds themselves needing to argue in fa­vour or against a certain concept vary from most informal, a chat after a conference session, for example, to the most formal, like presenting a re­search paper and having a formal discussion with the audience afterwards. Whatever the occasion, to prove your expertise education and culture, you need to tailor your speech, the flow of your argumentation according to the logic rules inherent in the very nature of science. The formality/informality of the actual words and phrases you employ will vastly depend on the situa­tion.

When having a discussion of a pro and contra type, in order to pre­sent and defend your viewpoint you will need to build a case. This means your delivery should have the following segments:

BUILDING A CASE:

1. Introduction

You need to direct the audience's attention towards the problem, as to why it concerns them, of what relevance it is.

2. Credentials

State clearly why you speak with authority on the subject. The reasons here may be infinitely varied. You may be an expert in the field, or you may have seen something intriguing on the television. You just need to identify your sources.

3. Position/Solution/Summary

Start the next section of your talk with a brief summary of your thesis and the proposed solution. It is of an equal importance to provide your reasons for advocating that particular solution.

4. Background of the Problem

This is where the elaboration on the problem begins. To give it a proper depth, you need to present your audience with the background of the prob­lem, its origins, reasons for occurrence, how it has been solved so far. Again, it is recommended to relate the audience with the issue by restating how it concerns them.

5. Argument for Position or Solution

As you are now in the core part of your talk, signal it by specifying minutely the criterion for judgement. This is highly important, as it will direct the au­dience's attention to the aspects you want to highlight and give them the op­portunity to assess properly if you have presented and supported your thesis well.

In as much detail as the situation, time and space allow you, explain your thesis. Support it with relevant and illustrative arguments and examples. Two supportive arguments are the basic standard. If there are more instances that confirm your points, perhaps it is more refined to use a general state­ment like "There are numerous other arguments that support my idea", then go on enumerating them. In other words, it is better to use two major argu­ments. The strong, persuasive, well supported speech is incomparably more persuasive and pleasant to listen to and engage in, than an unnecessarily long one.

It is at least a sign of well breeding to account for the different options which you do not approve of. Yet, it is also a way of proving the superiority of your opinion. Give credit to the viewpoints you are against, say what their strengths are. Then go back to your ideas as presented earlier and ex­plicitly show their superiority to those you do not admit.

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