Personally this idea of "I will just Google it" or "I will just derive the formula when I need it" have costed me a lot. As the article says learning progresse

Personally this idea of "I will just Google it" or "I will just derive the formula when I need it" have costed me a lot. As the article says learning progresses from what to how and finally to why. Starting with why is just a way of deciving ourselves into feeling smart. I would say in areas like language learning asking why question isn't even possible generally.