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Roblox assert script usage is one of those things that separates a hobbyist scripter from someone who really understands how to build a stable game. If you've ever spent three hours hunting down a bug only to realize a variable was nil when it should have been a Part, you've felt the exact pain that assert is designed to solve. It's a simple, built-in Luau function that acts as a gatekeeper for your code. If the condition you give it isn't met, it basically pulls the emergency brake, stops the script, and tells you exactly what went wrong. ...