How Do You Know?

When someone tells you something, ask: 'How do you know?' This simple question separates reliable information from rumors, guesses, and made-up claims.

At this level, questioning evidence and sources requires you to move beyond surface-level thinking and engage with complexity, nuance, and ambiguity.

At this level, you're ready to move beyond surface-level thinking and engage with complexity. Real-world problems rarely have simple answers, and developing comfort with ambiguity is a crucial skill.

Here's a framework for approaching questioning evidence and sources:

1. Frame the question precisely. Vague questions lead to vague answers. Instead of "Is this good?" ask "What are the specific benefits and drawbacks, and for whom?"

2. Examine the evidence critically. Not all evidence is equal. Consider the source, the methodology, the sample size, and potential biases. Strong evidence comes from reliable sources with transparent methods.

3. Consider multiple perspectives.

Every issue looks different from different viewpoints. Before forming your opinion, genuinely try to understand why someone might disagree with you. This isn't about being wishy-washy — it's about being thorough.

4. Watch for thinking traps. Confirmation bias (only seeing evidence that supports your existing belief), anchoring (being overly influenced by the first piece of information), and false dichotomies (assuming there are only two options) can derail even careful thinkers.

5. Build your argument with structure.

A strong position has: a clear claim, supporting evidence, logical reasoning connecting the evidence to the claim, and honest acknowledgment of limitations or counterarguments.

6. Apply second-order thinking. Don't just ask "What happens next?" Ask "And then what happens after that?" Many unintended consequences become visible only when you think two or three steps ahead.

Use this framework as you work through the scenario and questions below.