1 / 10

Informal Reasoning

Informal Reasoning. Fallacies. Ad Ignorantiam : Something is true on the grounds that there is no evidence to disprove it. . The Communist witch hunt in the 1960’s “ There is nothing in his files to say he is not a communist” Senator Joe McCarthy. Post hoc ergo propter hoc.

nirav
Download Presentation

Informal Reasoning

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Informal Reasoning

  2. Fallacies

  3. Ad Ignorantiam: Something is true on the grounds that there is no evidence to disprove it. • The Communist witch hunt in the 1960’s • “ There is nothing in his files to say he is not a communist” • Senator Joe McCarthy

  4. Post hoc ergo propter hoc • A follows B then B must be the cause of A • Murder rate goes up after the abolition of capital punishment, therefore can we say that capital punishment is an effective deterrent • It could be the case but we need more evidence

  5. Smoking causes causes

  6. Explain this • As the number of churches in American cities increase so does the number of prostitutes!!!

  7. Ad hominem • You attack the supporters of an argument • You may have a vested interest in something but that does not mean you cannot be fair.

  8. Circular reasoning • Assuming the truth in something you are supposed to be proving • Page 126 in book

  9. False Dilemma • Assuming there are only 2 ways of solving something when there are other options • Binary thinking • Pro life/ pro choice

  10. Fallacies

More Related