PHIL 210 Lecture Notes - Lecture 2: Flickr, Gottlob Frege, Logical Reasoning
31 Jan 2018
School
Department
Course
Professor
Document Summary
After completing this lesson you will be able to: explain the difference between deductive and ampliative arguments, understand concepts such as defeasibility and total state of information, discuss common forms of ampliative arguments. Check out the learning game jane and reflect on this: Assuming the premises are true, this amounts to asking if the argument is valid. Of course, but it is not an example of poor reasoning. Often we have to go beyond what is deductively implied by our premises. In deductive reasoning, the conclusion is contained in premises. In a deductively valid argument, the truth of the premises is sufficient for the truth of the conclusion. In a deductively valid argument, all of the information stated in the conclusion is already implicit in the premises. So, in a sense, a deductive argument cannot really tell us anything new.
