Statement Assumptions

In this section, we will delve into the reasoning concept of Statement Assumptions. This type of question tests your ability to understand the underlying assumptions made by the author of a statement. An assumption is something that is taken for granted or presumed to be true for the statement to make sense or be valid. You need to identify what unstated belief or premise the speaker or writer holds.

The key to solving these problems lies in understanding the relationship between the statement and the potential assumption. The assumption is not explicitly stated in the statement but is necessary for the conclusion drawn in the statement to be logical. We are looking for a hidden premise.

Understanding Assumptions

An assumption is a silent premise that is taken for granted by the person making the statement. It's what the speaker believes to be true, even if they don't say it out loud. Think of it as the foundation upon which the statement is built. If the assumption is false, the statement might not hold water or might not be as convincing.

For example, if someone says, "I am going to the library to study for my exam," they are implicitly assuming a few things:

• They believe studying is important for passing the exam.
• They believe the library is a suitable place for studying.
• They believe they have the ability to study effectively.

How to Identify Assumptions

To effectively identify assumptions in a given statement, follow these steps:

1. Read the Statement Carefully: Understand the core message and the conclusion the statement is trying to convey. Identify the main point and any action or opinion expressed.
2. Identify the Conclusion: What is the logical outcome or the intended message of the statement? What is the speaker trying to achieve or convey?
3. Look for Hidden Premises: Ask yourself, "What must the speaker believe to be true for this statement to be valid or sensible?" or "What unstated idea connects the given information to the conclusion?"
4. Test the Assumption: A good way to test a potential assumption is to negate it. If negating the assumption makes the statement illogical or invalid, then it is likely a correct assumption. If the statement still makes sense after negating the assumption, it's probably not a necessary assumption.
5. Distinguish from Inferences and Arguments: An assumption is not an inference (which is a conclusion drawn from evidence) or an argument (which provides reasons to support a conclusion). It's a prerequisite for the statement itself.

Common Types of Assumptions

Statement Assumption questions often involve certain common patterns of assumptions:

• Cause and Effect: Assuming a particular cause leads to a specific effect, or that a certain action will produce a desired outcome.
• Generalization: Assuming that what is true in one instance or for a part is true for others or for the whole.
• Beliefs and Values: Assuming that others share the same beliefs, values, or priorities.
• Sufficiency: Assuming that a particular condition or action is sufficient to achieve a goal.
• Necessity: Assuming that a particular thing is necessary for a certain outcome.

Example 1:

Statement: "To improve the country's economy, the government should reduce taxes."

Let's analyze this statement to find the underlying assumptions. The speaker believes that reducing taxes will lead to an improved economy. What must they believe for this to be true?

Potential Assumptions:

1. Reducing taxes stimulates economic activity (e.g., by encouraging spending or investment).
2. The current tax rates are hindering economic growth.
3. The government has the power to reduce taxes and implement economic policies.

Let's test assumption 1: "Reducing taxes does NOT stimulate economic activity." If this is true, then the statement's recommendation loses its logical basis. Therefore, this is a strong assumption.

Consider another statement: "Our company's sales have been declining for the past three quarters, so we need to launch a new advertising campaign immediately."

Assumptions:

• The advertising campaign will be effective in increasing sales.
• The decline in sales is due to a lack of advertising or ineffective advertising.
• Launching a campaign immediately is the best course of action.

If we negate the first assumption: "The advertising campaign will NOT be effective in increasing sales." This would undermine the entire reason for launching the campaign, making the statement questionable.

Example 2:

Statement: "Mr. Sharma decided not to send his son to the local public school this year because he believes the quality of education there has deteriorated."

Here, Mr. Sharma's decision is based on his belief about the school's quality.

Assumptions:

1. Mr. Sharma values a high quality of education for his son.
2. He believes that the local public school's quality of education has indeed deteriorated.
3. He believes that there are alternative schools or educational options available that offer better quality.
4. He has the financial means or ability to send his son to an alternative if necessary.

Let's test assumption 1: "Mr. Sharma does NOT value a high quality of education for his son." If this were true, his decision to move his son away from the school (even if its quality declined) would be illogical. Thus, this is a valid assumption.

Example 3:

Statement: "The citizens of city X are facing severe water scarcity. The government should immediately build more dams."

The statement suggests a solution (building dams) to a problem (water scarcity).

Assumptions:

• Building more dams will effectively solve the water scarcity problem in city X.
• There are suitable locations and resources available for building new dams.
• The cost and environmental impact of building dams are acceptable compared to the benefits.
• The current water scarcity is primarily due to a lack of storage capacity, which dams would address.

Test assumption 1: "Building more dams will NOT effectively solve the water scarcity problem." If this is true, then the recommendation to build dams is baseless. This confirms it as a key assumption.

Example 4:

Statement: "You should always carry an umbrella when you go out in the rainy season."

This is a piece of advice. What is the speaker assuming?

Assumptions:

1. It rains during the rainy season. (This might seem obvious, but in logic, even the most apparent truths can be assumptions.)
2. Carrying an umbrella protects you from the rain.
3. Getting wet in the rain is undesirable or can lead to negative consequences (like illness).
4. The person being advised has access to an umbrella and can carry it.

Negate assumption 3: "Getting wet in the rain is desirable or has no negative consequences." If this were true, then advising someone to carry an umbrella to avoid getting wet would be pointless. Therefore, assumption 3 is crucial.

Distinguishing Assumptions from Other Concepts

It's important to differentiate assumptions from other related reasoning concepts:

• Inference: An inference is a conclusion reached on the basis of evidence and reasoning. It's what you can logically deduce. An assumption is a premise that is *taken for granted* to make the statement or argument valid.

  Example: Statement: "The sky is cloudy." Inference: "It might rain soon." (This is a deduction based on the evidence). Assumption (if the statement was "I'm taking my umbrella"): "Rain is possible." (This is a belief that supports the action).

• Conclusion: The conclusion is the main point or the result of an argument or statement. An assumption is a *part* of the argument that supports the conclusion, but it is unstated.
• Argument: An argument consists of premises (reasons) and a conclusion. An assumption is an unstated premise that links other premises to the conclusion.

Shortcut/Memory Trick: The Negation Test

Example of Negation Test in Action:

Statement: "This medicine is very effective in treating headaches."

Potential Assumption: "The medicine has been tested for its effectiveness."

Negating the assumption: "The medicine has NOT been tested for its effectiveness."

If the medicine has not been tested, can we confidently say it is "very effective"? No. The statement loses its credibility and logical basis. Therefore, the assumption that it has been tested is correct.

Another Potential Assumption: "Headaches are a common ailment."

Negating the assumption: "Headaches are NOT a common ailment."

If headaches are not common, the statement "This medicine is very effective in treating headaches" still makes sense. The medicine could be effective for the few people who get headaches. Therefore, this is not a necessary assumption.

Practice Questions Strategy:

When faced with a statement and multiple-choice options for assumptions:

1. Read the statement thoroughly.
2. Think of what the speaker must believe to make the statement.
3. Go through each option.
4. Apply the negation test to each option.
5. Select the option that, when negated, makes the original statement invalid or illogical.

Remember, assumptions are unstated beliefs that are essential for the statement to be coherent and logical. They are not direct conclusions, general knowledge, or the main point itself, but rather the silent support system for the statement.