When one starts sharing decks it frequently happens that people violate those rules and try to learn Anki cards for material that they haven't learned beforehand.

Fortunately there are enough exceptions to Wozniak's guideline that violating rule 2 can often be beneficial. For me this applies to any information that I am able to understand (rule 1) from the terse information in the cards themselves. In the same way I tended to learn most efficiently from practice exams when studying.

For material that is too complicated (or simply insufficiently specified) to learn from the Anki deck I do honor rules 1 and 2. This means I keep the deck in my active reviews only if (and when) I am sufficiently curious about the subject matter that I will naturally be inspired to look up every term I encounter and do not understand. Just In Time learning is viable.