Ch. 3
2 of 1 ·The Exception Hunt
Chapter 3 · Patterns Can Fool You
Lesson 2 · Patterns and Exceptions
The Exception Hunt
Search for the case that tests where a rule stops working.
Easy~25 minFree preview
Concept
Exceptions improve a rule
An exception is not an annoyance to hide. It shows the boundary of a claim and helps you replace an overconfident rule with a more accurate one.
Example
All metal feels cold
Click to zoomIllustration supporting All metal feels coldMetal often feels colder than wood at the same room temperature because it transfers heat faster. Warm metal is an obvious exception to the rule metal is always cold.