Comment by coldblues

I am referring to the standard metric used in SRS communities.

When people in the language learning community say they "learn 20 words a day", they are referring to New Cards Added. It is a metric of input and initial encoding, not guaranteed permanent storage.

In Anki, "Learning" is literally a specific phase (the red cards). You introduce the card, you pass the initial threshold, and then the algorithm handles the retention over the subsequent weeks. You are conflating the process of learning (adding new information) with the result of mastery (long-term active recall).