Proof by Cases

Shatter Proof Standard CD jewel cases. Unlike traditional CD jewel cases, these cases are made of durable plastic material that is not easy to break.

Maxtek Shatter Proof PP Jewel Case, 10.4 mm Standard Single Disc Clear CD Jewel Case with Clear Tray, 10 Pieces Pack.

The incredible palindromic hat-trick

This iPhone case can stop a .50 caliber bullet

Cabela's 'Bullet-Proof' Aluminum Gun Cases on Sale « Daily Bulletin

Cookies Smell Proof Strain Case – Cookies Clothing

Example of a Proof By Cases

The best dust-proof cases for the iPhone 11 and iPhone 11 Pro

10 compelling characteristics of great case studies - BarnRaisers, LLC

Discrete Math Lecture 03: Methods of Proof