University of Kansas, Fall 2004
Philosophy 160: Introduction to Ethics
Ben Egglestoneggleston@ku.edu

Implication

For each of the following sets of statements, ascertain whether X implies Y (which we’ll represent as X → Y).

  X Y X → Y?
1 All human beings are mostly water.
Clint Eastwood is a human being.
Clint Eastwood is mostly water.  
2 Clint Eastwood is mostly water. All human beings are mostly water.  
3 Lawrence was founded in 1995. Lawrence was founded less than 20 years ago.  
4 Lawrence was founded more than 50 years ago. Lawrence was founded before 1900.  
5 Either Kansas is in the U.S. or France is.
France is not in the U.S.
Kansas is in the U.S.  
6 Either Kansas is in the U.S. or France is.
Kansas is not in the U.S.
France is in the U.S.  
7 Denver is in Colorado.
Las Vegas is in Nevada.
Denver is in Colorado and Las Vegas is in Nevada and Los Angeles is in California.  
8 Denver is in Colorado and Las Vegas is in Nevada and Los Angeles is in California. Denver is in Colorado.  
9 The most common argument in support of the view known as cultural relativism is invalid. Cultural relativism is not true.  
10 If cultural relativism were true, then 2 plus 2 would equal 5.
2 plus 2 does not equal 5.
Cultural relativism is not true.