Introduction / Context:
This problem tests your ability to detect necessary, unstated beliefs (implicit assumptions) that make a practical action sensible. A society posts a “salespersons not allowed” notice. What must the society be assuming for this act to have the intended effect?
Given Data / Assumptions:
- Action: A prohibition notice is displayed at the society gate.
- Assumption I: All salespersons will voluntarily stay away.
- Assumption II: The gate security can enforce the rule and stop violators.
Concept / Approach:
An implicit assumption is required for the action to be effective. A posted rule typically relies on a combination of compliance and enforcement. However, a 100% voluntary compliance claim is too strong; realistic policies also assume some enforcement capability (e.g., a guard who can intercept violators).
Step-by-Step Solution:
Ask: If II were false (no enforcement at the gate), would the notice deter determined salespersons? Effectiveness would drop drastically, undermining the purpose. Hence II is necessary.Ask: If I were false (not all salespersons stay away), can the notice still work overall? Yes—some may still be deterred by the sign and others by the guard. Therefore I is not required.
Verification / Alternative check:
Real-world policies combine signage plus security. Rules with zero enforcement are widely ignored; thus enforcement capacity is the operative assumption.
Why Other Options Are Wrong:
I-only: Assumes perfect voluntary compliance—unrealistic and not necessary.Either I or II / Both: Overstate the requirement; only enforcement capability is essential.Neither: Incorrect because some enforcement assumption is required.
Common Pitfalls:
Confusing “helpful” with “necessary.” Voluntary compliance helps but is not required to justify posting the rule; enforcement is the key necessity.
Final Answer:
Only assumption II is implicit
Discussion & Comments