4.3 fallacies involving unwarranted assumptions Flashcards
unwarranted assumption
is one that in context stands in need of support
begging the question
an argument begs the question when it assumes the point to be proved . begging the question is also known as arguing in a circle
false dilemma
occurs when one uses a premise that unjustifiable reduces the number of alternatives to be considered
appeal to unreliable authority
is an appeal to an authority when the reliability of the authority may be reasonable doubted
false cause fallacy
occurs when one possible cause of a phenomenon is assumed to be cause although reasons are lacking for excluding other possible causes
slippery slope fallacy
occurs when the arguer assumes that chain reaction will occur but there is insufficient evidence that one or more events in the the chain will cause the others .
complex questions
asking a question that illegitamelty presupposes some conclusion
leading question
strongly suggest an answer the questioner ants to elicit but a leading question need not involve unwarranted assumption