Ever felt like an argument sounded convincing, but something nagged at you? You're not imagining it. Most arguments are like icebergs: the visible part is just the tip, and the real weight sits beneath the surface. Before you agree or disagree with a claim, your job is to pull the whole structure into the light—the stated conclusion, the supporting reasons, and the quiet assumptions holding it all together.
Why Surface-Level Judgements Lead You Astray
When you evaluate arguments based only on what's explicitly said, you're working with incomplete information. It's like trying to judge an iceberg by staring at the tiny peak above the water whilst the massive base remains hidden. The problem? Writers and speakers rarely spell out every step of their logic. They leave gaps—unspoken beliefs, cultural assumptions, ideological leanings—that you're expected to fill in yourself.
This is where confusion creeps in. You might sense something's off, but you can't pinpoint why. That vague unease is your mind detecting missing pieces. To move from confusion to confident evaluation, you need a method to make the invisible visible.
Revealing the Whole Argument Beneath the Surface
Start by identifying the core claim in one clear sentence. For example: 'Smartphones should be banned in classrooms because they ruin students' attention.' Now list the stated reasons—perhaps 'students get distracted by social media notifications.'
Next, dig for the hidden assumptions. What must be true for this argument to hold? Maybe it assumes:
- All or most phone use in class is genuinely distracting (not educational)
- Bans are enforceable and won't just push distractions underground
- The benefit of removing phones outweighs any potential learning uses
These unstated ideas are the iceberg's submerged bulk. Once you've surfaced them, you can test whether they're solid or shaky.
Your Simple Checklist for Critical Evaluation
Use this quick framework to deconstruct any argument you encounter:
- What's the exact claim being made?
- What reasons or evidence are given to support it?
- What assumptions must be true for the claim to work?
- From what point of view or context is this written?
- Which deeper beliefs or ideologies might be shaping it?
- Who benefits if I accept this argument?
Write your answers down. Seeing them on paper transforms a vague hunch into a clear, testable structure. You might discover the claim is too broad, the reasons are thin, or the assumptions don't stand up to scrutiny. This is critical thinking in action—not guesswork, but precision.
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