Exercise 5.6
3. All times a person decides life is impossible are times a person has a right to end his/her life.
8. All beings in which genes and environment control destinies are beings that fail to act freely.
Exercise 5.6
9. All times toy-gun play is encouraged are occasions in which children are sent the message
Part V
Do Kids Make Parents Happy?
Tad and Lara, his fiancé, are walking in the park. Tad pauses a moment to look at some
children playing in the grass. Lara stops beside him.
“I’ll think about it,” Tad says. “But could you tell me once again about why you don’t
want any?”
1. All average childless couples are couples who experience higher levels of
emotional well-being.
2. All kids are persons who make you laugh.
All persons who make you laugh are persons who make you happy.
Exercise 5.6
3. All people with kids are people who participate in a kind of immortality.
All people who participate in a kind of immortality are happy people.
4. All newborns are babies who must be fed every couple of hours.
5. All newborns are babies who cause terrible loss of sleep to their parents.
All babies who cause terrible loss of sleep to their parents are babies who tend
stuff on all the furniture. How happy is living in a constant mess going to make you?”
6. All youngsters are persons who create a terrible mess around the house.
7. All activities identical to having kids are activities that force parents to be
unselfish.
8. All kids are children who create an atmosphere of growth.
All children who create an atmosphere of growth are children who make parents
happy.
9. All toddlers are kids who scream, whine, and throw tantrums.
Exercise 5.6
10. All kids who constantly have to be driven to and from places are kids who make
11. All kids are playful children.
12. Some kids are people who grow up to accomplish extraordinary things.
13. Some kids are people who make parents proud.
All people who make parents proud are people who make parents happy.
14. Some kids are children who prevent parents from taking a vacation.
15. Some kids are children who prevent parents from having sex.
All kids who prevent parents from having sex are kids who make parents
unhappy.
16. All kids are children who force parents to work together as a couple.
17. All kids are children who create deeper relationships in parents.
18. All kids are children who love parents for who they are.
All children who love parents for who they are kids who make parents happy.
Exercise 5.6
19. All our kids are children who would cost us a fortune.
20. All our kids are kids who would leave us constantly broke.
21. All our kids are children who would prevent me from achieving my career
goals.
All children who would prevent me from achieving my career goals are children
22. All our kids are kids who would call on us in later life.
25. Some kids are kids hard to get rid of.
26. All kids identical to us are kids that left the nest early.
Exercise 5.7
Part I
1. All A are B.
A
B
B
A
D
A
F
E
H
E
E
D
A
6. After obverting the first premise and contraposing the conclusion, we have,
7. After contraposing the first premise and obverting the second premise and the conclusion, we
have,
Exercise 5.7
8. After obverting the first premise and contraposing the second premise and the conclusion, we
have,
9. After contraposing the first premise, obverting the third premise, converting and obverting
the fourth premise, and obverting the fifth premise, we have,
10. After converting and obverting the second and fourth premises, and obverting the third and
fifth premises and the conclusion, we have:
Exercise 5.7
Part II
1. All A are B.
4. No K are N.
5. After obverting the first premise and contraposing the second premise, we have:
6. After obverting the first premise and contraposing the conclusion, we have,
Exercise 5.7
7. After contraposing the first premise and obverting the second premise and the conclusion, we
have,
8. After obverting the first premise and contraposing the second premise and the conclusion, we
have,
Exercise 5.7
Part III
No R are D.
2. No restrictive trade policies are policies that fail to invite retaliation.
All policies that lead to a trade war are policies that threaten our standard of living.
3. All things that poison drinking water are things that cause disease and death.
Exercise 5.7
4. No brittle things are ductile things.
5. Some college students are people who purchase their term papers.
All cheats are people expelled from college.
6. No things identical to creation science are things that favor the teaching of evolution.
Exercise 5.7
7. All people who give birth to crack babies are people who increase future crime rates.
8. All things that retard population growth are things that increase food availability.
All things that prevent starvation are things that enhance life.
Exercise 5.7
9. Some countries are countries that allow ivory trading.
All countries that resist elephant killing are countries that discourage poachers.
10. All things that promote skin cancer are things that cause death.
All things that preserve the ozone layer are things that prevent the release of CFCs.
Exercise 5.7
Part IV
1. No ducks are waltzers.
2. No experienced people are incompetent people.
3. No terriers are things that wander among the signs of the zodiac.
4. All hummingbirds are richly-colored birds.
5. All non-ripe fruits are non-wholesome fruits.
6. All sons of mine are slim people.
Exercise 5.7
7. All books in this library that I do not recommend are books that are unhealthy in tone.
8. No interesting poems are unpopular poems among people of real taste.
No modern poems are poems free from affection.
9. All writers who understand human nature are clever people.
All true poets are people who can stir the hearts of men.
Exercise 5.7
10. All animals that belong to me are animals I trust.
All dogs are animals that gnaw bones.