PT158 S4 Q2 ExplanationColumnist: Making some types of products

Answer choices, explained

1. A

   Not Equivocation1% picked this

   uses the word "environment" in one sense in a premise and in a different sense in the conclusion

   Equivocation occurs when a key term is used with different meanings in different parts of the argument, creating the illusion of a valid inference. For this flaw to apply, the word "environment" would need to shift in meaning between premises and conclusion. But the argument uses "environment" and "environmental damage" consistently throughout — it just dramatically underestimates what that concept includes. The error is not that the meaning of the word changes; the error is that the argument fails to account for everything the word encompasses. This is a scope problem (ignoring relevant factors), not a semantic problem (changing word definitions). The argument has a single, consistent understanding of "environment" — it is just an impoverished one.

   1%
2. B

   Not Reverse Causality6% picked this

   treats an effect of energy-related damage to the environment as if it were instead a

   Treating an effect as a cause (or vice versa) involves confusing the direction of a causal relationship — like concluding that wet streets cause rain. The argument here makes no causal claims whatsoever between recycling and traditional manufacturing. The two processes are being compared side by side, not linked in any cause-and-effect sequence. The argument's structure is purely comparative: recycling and traditional manufacturing use the same amount of energy, therefore they cause similar environmental damage. The error is in the scope of that comparison (looking only at energy), not in any confusion about which process causes which outcome. There is simply no causal chain in this argument to reverse.

   6%
3. C

   Not a Sampling Flaw6% picked this

   fails to consider that the particular types of recycled products that it cites may not be representative of

   A sampling error occurs when a conclusion about a larger population is drawn from an unrepresentative subset — like surveying only cat owners about which pets are best. The argument here involves no sampling whatsoever. It does not survey some recycling operations and generalize to all of them. The argument's error is entirely conceptual: it equates energy consumption with total environmental impact. This scope error would persist even with perfect, comprehensive data covering every recycling and manufacturing operation on Earth. If you had flawless energy consumption figures for every factory in existence, the argument would still be wrong because it ignores non-energy environmental factors. The problem is the analytical framework, not the quality or representativeness of any sample.

   6%
4. D

   Correct84% picked this

   fails to consider that making products from recycled materials may have environmental benefits unrelated

   Why this is right

   The argument's reasoning chain is: recycling uses as much energy as traditional manufacturing, and energy production damages the environment, therefore recycling is probably as environmentally damaging as traditional manufacturing. This conclusion only follows if energy consumption is the sole determinant of environmental impact — an assumption that is plainly unjustified. Environmental impact is multi-dimensional. Recycling may reduce landfill overflow, decrease the need for raw material extraction (mining, logging, drilling), lower toxic waste output, reduce water pollution, preserve biodiversity by limiting habitat destruction, and conserve non-renewable resources. Two processes can consume identical amounts of energy while having vastly different environmental footprints across these other dimensions. The argument focused exclusively on energy and treated it as a proxy for total environmental impact, when in reality it is just one factor among many. This answer correctly identifies that failure: the argument ignores environmental benefits of recycling that have nothing to do with energy.

   Skill tested: Flaw · how this choice captures the argument's function is the move to repeat next time.

   84%
5. E

   Not Correlation vs. Causation3% picked this

   presumes that simply because one phenomenon follows another phenomenon the earlier phenomenon must be a cause

   The correlation-versus-causation flaw occurs when someone observes that two phenomena co-occur and incorrectly concludes that one must cause the other. The argument here does not involve any correlation at all. It directly compares the energy consumption of two processes and draws a conclusion about their relative environmental impact. No one is claiming that recycling causes traditional manufacturing or vice versa, nor that energy use and environmental damage merely happen to coincide. The argument asserts a direct, reductive equivalence: same energy input means same environmental damage output. That is a scope error — treating one factor as the whole story — not a confusion about whether correlation implies causation. The flaw categories are entirely different.

   3%