By using optimization theory, examine the following quotations:
1. The optimal number of traffic deaths in the United States is zero.
2. Any pollution is too much pollution.
3. We cannot pull U.S. troops out of Iraq. We have committed so much already.
4. If Congress cuts out the NASA space station, we will have wasted all the resources that we have already spent on it. Therefore, we must continue funding it.
5. Since JetGreen Airways has experienced a 25 percent increase in its insurance premiums, the airline should increase the number of the passengers it serves next quarter in order to spread the increase in premiums over a larger number of tickets.