[thekyle]

> A similar question might be “why would you invent a new programming language, when you could just use an existing one?”

I feel like this is a bad analogy if you are trying to support the idea that teachers need to make their own lesson plans. Could you imagine if every programmer had to build their own programming language before using it create software? Nothing would ever get done.

Instead, the vast majority of programmers just use one of the many existing programming languages.