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Presentation Skills for Business

Chapters 3 › Unit 3: Examples of arguments: good & bad View instructions Hide instructions

Examples of arguments: good & bad

Here you have more examples of arguments. Decide which of them are good and which are bad. Bad arguments are those that are based on dubious premises or which incur in logical fallacies.

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  1. Nature is governed by fixed and unchangeable laws. But every law is the work of some legislator. Therefore, there is some legislator responsible for the governing of nature.
  2. You should believe John because what he says is the truth.
  3. You can’t have total government control over an industry and no regulation at all at the same time. We shouldn’t allow the government to take total control of an industry. Therefore, it should be completely free of government regulation.
  4. You don't want tea, therefore you must want coffee
  5. All whales are mammals. All mammals are warm-blooded. So all whales are warm-blooded.
  6. I am the greatest basketball player in the world. Therefore, I am a better basketball player than Kobe Bryant.

Chapter II - Unit 5 : Examples of arguments: good & bad

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  1. Nature is governed by fixed and unchangeable laws. But every law is the work of some legislator. Therefore, there is some legislator responsible for the governing of nature.
    BAD There is here a logical fallacies. The laws nature is governed by don't refer to the same laws legislator are making. The word "law" has here a double sense the narator is ignoring.

  2. You should believe John because what he says is the truth.
    BAD It is based on dubious premises, what proves that John is saying the truth ?

  3. You can’t have total government control over an industry and no regulation at all at the same time. We shouldn’t allow the government to take total control of an industry. Therefore, it should be completely free of government regulation.
    BAD There is no logical link between the three propositions. It is not beacause both full control and no regulation can't exist at the same time that a mix between these two positions can't be chosen

  4. You don't want tea, therefore you must want coffee.
    BAD : There is no logical link here. If you don't want tea you simply don't want tea. Maybe you are simply not thirsty...

  5. All whales are mammals. All mammals are warm-blooded. So all whales are warm-blooded.
    GOOD : We have here an example of a logical and irefutable argumentation

  6. I am the greatest basketball player in the world. Therefore, I am a better basketball player than Kobe Bryant.
    BAD : If the reasonning is logical, what is the proof that you are the greatest basketball player in the world?

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