Chapter 1, Tutorial 4
Complex Arguments and Tree Diagrams


In this tutorial, we look at arguments that are slightly more complicated and more realistic. It's best to see what's in store with an example.



































































Let's look at some of the basics of these more complex tree diagrams. To get started, which of the following arguments have premises that independently support the conclusion?

  1. One reason to believe that the evolution of species is real is a look at the fossil record. Another reason is the evidence from the laboratory on speciation in fruit flies.
  2. All reindeer are hoofed beasts. No hoofed beasts are bats. So, no reindeer are bats.
  3. I can hear music coming from inside. And there are several lights on. So, someone is probably at home.