Relevant type system

Okay kiddo, let me tell you about a special thing called a "type system". It's like a set of rules that helps your computer understand what kind of information it's dealing with.

When you give your computer a piece of information, it needs to know what to do with it. For example, if you tell your computer to add two numbers together, it needs to know that those numbers are "integers" (which means whole numbers) so it can add them up correctly.

But sometimes people make mistakes and give the wrong type of information to the computer. Maybe they accidentally give it a string of letters instead of a number, or they mix up two different types of data.

That's where a "relevant type system" comes in. It helps catch those mistakes before they can cause problems. It checks to make sure that the information you're giving the computer matches the rules for that specific program or language.

So think of it like a safety net for your computer. It catches any mistakes you might make and helps keep everything running smoothly.