Analyzing Implicit Assumptions in Arguments

Let's break down the given argument and assumptions to understand what is implicitly assumed.

The argument states:

"During the depression in the Bay of Bengal, the wind blew away all the hoardings."

This statement presents a cause (wind during the depression) and an effect (all hoardings being blown away). For this effect to occur, certain conditions must be true, even if not explicitly stated. These unstated conditions are the implicit assumptions.

Let's look at the assumptions provided:

• Assumption 1: The wind was fast.
• Assumption 2: The hoardings were not fixed properly.

The argument implies that the force exerted by the wind was sufficient to overcome the resistance of the hoardings, causing them to be blown away. The resistance of the hoardings depends on how they were fixed. The force of the wind depends on its speed.

Consider the following possibilities for the hoardings to be blown away by the wind:

• The wind was very strong (fast), capable of blowing away even reasonably well-fixed hoardings. In this case, Assumption 1 holds true to explain the outcome.
• The hoardings were not fixed strongly, making them susceptible to being blown away by a wind that might be strong, but not necessarily exceptionally "fast". In this case, Assumption 2 holds true to explain the outcome.
• A combination of both: The wind was strong (fast) and the hoardings were not fixed properly. In this case, both assumptions contribute to explaining the outcome.

For the argument "the wind blew away all the hoardings" to be valid, it must be implicitly assumed that the conditions were such that the wind's force could overpower the hoardings' resistance. This requires either the wind force to be sufficiently high (related to speed/Assumption 1) or the hoardings' resistance to be sufficiently low (related to fixing/Assumption 2), or both.

If we assume neither 1 nor 2 is true (i.e., the wind was not fast AND the hoardings were fixed properly), then it would be highly unlikely for all the hoardings to be blown away during a depression. Therefore, for the event described in the argument to happen, at least one of these conditions must be met.

The argument implicitly relies on the fact that either the wind had enough force (suggesting it was fast) OR the hoardings lacked enough resistance (suggesting they were not fixed properly) for the outcome to occur. Thus, either Assumption 1 or Assumption 2 (or both) must be implicitly true.

Therefore, the argument implicitly assumes that either the wind was fast enough, or the hoardings were not fixed properly enough, or both, to cause them to be blown away.

The statement "Either 1 or 2 is implicit" means that the truth of Assumption 1 OR the truth of Assumption 2 (or both) is necessary for the argument to make sense. This aligns with our analysis.

Revision Table: Argument & Assumptions

Additional Information: Identifying Implicit Assumptions

Identifying implicit assumptions is a crucial part of logical reasoning and critical thinking. When analyzing an argument, ask yourself:

• What must be true for this argument to make sense?
• What unstated belief or condition is the speaker relying on?
• If this unstated condition were false, would the argument fall apart?

In the case of the wind and hoardings, if the wind wasn't strong enough AND the hoardings were fixed perfectly, the event (all hoardings blowing away) wouldn't happen. Thus, the argument implicitly assumes conditions (either strong wind or weak fixing) that would allow the event to occur.

Understanding implicit assumptions helps in evaluating the strength and validity of arguments by exposing the underlying premises upon which they rest.