PHL 410 Textbook Exercise 5.6.1

In each of the following decide whether the cause mentioned is a necessary condition, a sufficient condition, both or neither.

The first one is an example.

1. Turning 18 makes a U.S. citizen eligible to vote. 

Necessary. It is necessary that a U.S. citizen turn 18 years of age before she or he is eligible to vote. The 18-year-old U.S. citizen will need to register to vote so being an 18-year-old U.S. citizen is not sufficient to be eligible to vote.

 

2. Providing the post office with your forwarding address causes all your mail to be sent to your new address.

 

3. In order for racial segregation to be eliminated, Jim Crow laws needed to be done away with.

 

4. Attacking a sovereign nation for non-self-defense reasons and without an authorization for military intervention from the United Nations Security Council will cause a nation to be in violation of international law.

Textbook Exercise 5.6.1.

In each of the following decide whether the cause mentioned is a necessary condition, a sufficient condition, both or neither.

The first one is an example.

1. Turning 18 makes a U.S. citizen eligible to vote.

Necessary. It is necessary that a U.S. citizen turn 18 years of age before she or he is eligible to vote. The 18-year-old U.S. citizen will need to register to vote so being an 18-year-old U.S. citizen is not sufficient to be eligible to vote.

2. Providing the post office with your forwarding address causes all your mail to be sent to your new address.

3. In order for racial segregation to be eliminated, Jim Crow laws needed to be done away with.

4. Attacking a sovereign nation for non-self-defense reasons and without an authorization for military intervention from the United Nations Security Council will cause a nation to be in violation of international law.