Someone argues: 'We should ban social media for teenagers because studies show it increases anxiety.' What is the key implicit premise needed to connect this evidence to the conclusion?
ASocial media is designed to maximize engagement at the expense of teenage well-being.
BWe should ban things that increase anxiety in teenagers.
CTeenagers use social media more than any other age group.
DThe studies on social media and anxiety are methodologically sound.
The stated premise is an empirical claim (social media increases anxiety). The conclusion is a policy recommendation (we should ban it). To get from the empirical fact to the policy conclusion, you need a normative bridge principle: 'we should ban things that increase teenage anxiety.' This hidden premise is highly contestable — it would also entail banning competitive sports, standardized testing, and many other things. Options A and C are additional factual claims, not the logical bridge. Option D questions a premise's reliability rather than identifying the missing link.
Question 2 Multiple Choice
What does the principle of charity instruct you to do when identifying implicit premises in an argument?
AAlways assume the arguer is wrong so you can identify and attack the weakest version of their assumptions.
BReconstruct the argument with the most defensible implicit premise available, to evaluate the strongest version of the argument.
CAccept the argument as valid by charitably assuming all unstated premises are true.
DFind the simplest implicit premise that links the stated reasons to the conclusion, regardless of whether it is defensible.
The principle of charity says: find the most reasonable, defensible implicit premise that makes the argument work. This prevents you from attacking a straw man (a weakened version the arguer didn't hold) while also making explicit exactly what must be assumed for the argument to succeed. Option A is straw-manning. Option C is too permissive — charity means finding the best version of the argument, not rubber-stamping it. Option D could produce a clearly false implicit premise, which would be uncharitable.
Question 3 True / False
An implicit premise that is widely shared and genuinely uncontroversial can legitimately be omitted from an argument without weakening it.
TTrue
FFalse
Answer: True
Yes. Most arguments omit background knowledge that both speaker and audience share. 'She studied hard, so she'll do well on the exam' implicitly assumes a connection between study and performance — a premise so uncontroversial it needs no defense. Making every shared assumption explicit would make communication unwieldy. The critical cases are when implicit premises are *contestable*, not when they are genuinely shared. The skill is distinguishing the two.
Question 4 True / False
Exposing an implicit premise in an argument is sufficient to refute it.
TTrue
FFalse
Answer: False
Surfacing a hidden assumption doesn't refute the argument — it identifies where scrutiny should be directed. The implicit premise might turn out to be fully defensible upon examination, in which case the argument is strengthened by making it explicit. The goal of identifying implicit premises is fair evaluation and locating genuine pressure points, not automatic dismissal. Treating exposure as refutation is a rhetorical fallacy of its own.
Question 5 Short Answer
Using the argument 'We should ban violent video games because violence in games increases real-world aggression,' demonstrate the method for finding its key implicit premise.
Think about your answer, then reveal below.
Model answer: Ask: what would have to be true for the stated premise ('games increase real-world aggression') to actually support the conclusion ('we should ban them')? The gap is bridged by a hidden normative principle: 'We should ban things that increase real-world aggression.' Once made explicit, this premise can be scrutinized: Is it defensible as a general policy? Would it also entail banning contact sports, certain films, or competitive activities? The implicit premise often contains the argument's most controversial commitment, and making it explicit reveals where the real debate lies.
The method — 'what would have to be true for the premises to support the conclusion?' — works generally. The stated premise alone never entails a policy conclusion without a normative bridge; finding that bridge is almost always the key move in analyzing arguments about what we 'should' do.