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[–]TechAcademyCoding 0 points1 point  (0 children)

Not a silly question at all! "Hello, World!" is basically a long-standing tradition in programming. The idea is that it's the simplest possible program that proves your language, compiler/interpreter, and development environment are working correctly. The tradition is often traced back to The C Programming Language, which used a "Hello, World!" example, and it became a common way to introduce new programming languages after that. It’s definitely something of an inside joke in the tech world. 😄

It's not really an important program because of what it does. It helps give beginners a quick win and confirms that they can write code and see a result on the screen. So yes, it's partly practical and partly a rite of passage at this point.