“State a hypothesis and the test that would disprove it.”
# The Hypothesis **Hypothesis:** All swans are white. **Falsification Test:** Observe swans across all geographic regions and historical records. If even one non-white swan exists, the hypothesis is disproven. --- **The Persuasion:** This hypothesis was accepted for centuries by Western civilization. It demonstrates how limited observation can create conviction. The hypothesis survived because confirmation bias is powerful—people saw white swans and stopped looking. The test itself is elegant: it requires only *one* counterexample to collapse the entire claim. This historical example beautifully illustrates why rigorous falsification matters in reasoning. *(Note: Black swans do exist, disproving the hypothesis.)*