Final answer:
The question requires providing proofs of logical arguments using principles like disjunctive syllogism, modus ponens, and modus tollens, as well as assessing the truth of premises. Feedback on peers' work is also needed to ensure logical consistency and completeness of their arguments.
Step-by-step explanation:
The student's question pertains to the construction of logical proofs and the evaluation of arguments. To construct a proof from the given premises, the student is required to use principles of logical inference. When evaluating arguments, one must assess both the logical structure and the truth of the premises. In philosophy, it is crucial to distinguish between the logical assessment, which determines if the premises support the conclusion, and the truth assessment, which evaluates the factual accuracy of the premises and conclusion.
A student provided with premises such as D⊃(A-C), D&∼A&C must parse the logical operators to form a cohesive argument. Using rules like disjunctive syllogism, modus ponens, and modus tollens can guide the construction of a valid proof. Each logical step must be justified either as a given premise or through a deductive inference. For instance, if D is true, then the statement (A-C) must be true (modus ponens), and if we also know that ∼A is true, then C must be true (disjunctive syllogism).
In providing feedback to peers, highlighting aspects such as omitted necessary steps, incorrect application of logical rules, or failure to account for alternative interpretations is helpful. Ensuring a robust logical structure and internal consistency in arguments is critical for a substantive discussion.