Necessary and Sufficient ConditionsBoutique amp; Couture Juliet Romeo Dress winter Casual ZZxHqv7rw
winter Boden Jacket Limited Leisure Edition The discussion of conditional claims requires us to think more about the meaning of the term "condition."
We've already said that "If A, then B," means that if we have A, then we know that B must follow. But then we also said that "A, only if B" means that if we do not have B, then we will not have A.
These two conditional claims, "If A, then B" and "A, only if B" refer to two different kinds of conditions: Limited Leisure winter Jacket Edition Boden necessarywinter Aqua Romper Boutique Boutique winter Aqua qadttx conditions and Boden Limited Leisure winter Jacket Edition sufficient conditions.
If we say that "x is a necessary condition for y," we mean that if we don't have x, then we won't have y. Or put differently, without x, you won't have y. To say that x is a necessary condition for y does not mean that x guarantees y.
Jacket Limited Leisure Edition winter Boden Some examples will help here.
Having gasoline in my car (I have a gasoline engine) is a necessary condition for my car to start. Without gasoline (x) my car (y) will not start. Of course, having gasoline in the car does not guarantee that my car will start. There are many other conditions needed for my car to start.
Having oxygen in the earth's atmosphere is a necessary condition for human life. Certainly, having oxygen will not guarantee human life. There are many other conditions needed for human life other than oxygen in the atmosphere.
Being 18 years of age is a necessary condition for being able to buy cigarettes legally in North Carolina. Of course, being 18 does not guarantee that a person will buy cigarettes. There are many other conditions that lead to a person buying cigarettes than being 18 years of age.
Leisure Jacket Limited Boden winter Edition If we say that "x is a sufficient condition for y," then we mean that if we have x, we know that y must follow. In other words, x guarantees y.
Jacket winter Limited Leisure Boden Edition Consider the following examples.
winter Boden Limited Edition Leisure Jacket Boden Jacket Leisure Limited winter Edition Earning a total of 950 points (95%) in this Critical Thinking class is a sufficient condition for earning a final grade of A. If you have 950 points for the course, then it must follow that you will have a final grade of A.
Jacket Leisure Edition winter Boden Limited Pouring a gallon of freezing water on my sleeping daughter is sufficient to wake her up. If I pour the gallon of freezing water on her then its guaranteed that she will wake up.
Limited Edition winter Boden Jacket Leisure Rain pouring from the sky is a sufficient condition for the ground to be wet.
Please note that in none of these example is the sufficient condition also a necessary condition.
winter Boden Edition Limited Jacket Leisure For example, it is not necessary to earn 950 points to earn an A in this course. You can earn 920 points to earn an A. (We cannot say that if you do not have 950 points then you can't have an A.)
It is not necessary to pour a gallon of freezing water on my daughter to wake her up. (A wrecking ball against the wall will do it as well.)
Leisure Jacket winter Limited Edition Boden Similiarly, it is not necessary for rain to be pouring from the sky for the ground to be wet. The sprinkler could be on as well.House Black Casual White Market winter Boutique Dress w6qBEgqU
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Is sunlight a necessary or sufficient condition for the roses to bloom?
Is earning a final grade of C a necessary or sufficient condition for passing the course?
Is being a male a necessary or sufficient condition for being a father?
Is earning 120 credits a necessary or sufficient condition for earning a degree at FSU?
Is having the flu virus in your blood a necessary or sufficient condition for being sick?
Is attending class regularly and punctually a necessary or sufficient condition for being successful in class?
winter Edition Jacket Limited Boden Leisure winter Leisure Jacket Edition Boden Limited Is being 20 years old a necessary or sufficient condition for being a college student?
Is completing all the requirements of your degree program a necessary or sufficient condition for earning your degree?
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Leisure Jacket Edition winter Boden Limited This discussion of necessary and sufficient conditions now helps to clarify the meaning of a conditional claim. In the conditional, If A, then B, the antecedent refers to a sufficient condition for the consequent. If you have A, then B must follow.
In "If A, then B," the consequent (B) is necessary condition for the antecedent A.
If you are going to pass the test, then you must study for five hours.
Passing the test is a sufficient condition for showing that you studied five hours.
Edition Limited winter Leisure Boden Jacket Studying for five hours is a necessary condition for passing the test.