Edge Case Thinking

Summary

Systematically asking 'what happens when...' — empty states, network failures, permission errors, concurrent edits — before engineers discover them mid-sprint.

• 1Take a feature idea and list 10 edge cases across empty, error, and boundary states.
• 2Learn the categories: empty state, error state, loading state, permission state.
• 3Practice this on a feature you've used that clearly missed an edge case.