The voice feature was created by me under the suspicion that it is way more difficult to pretend to have understood something while talking to someone rather than choosing a proper multiple choice answer. But to be honest, I don't know if that is a valuable idea or just another sign of my attachment to the most complicated thing I created.
So, the question I want to ask seriously is: What would help you to trust an AI's diagnosis of your understanding? And is it even worthwhile, or should I stick to the solution of doing spaced repetition and trusting myself?
To finally trust the AI I'd like for it to find (if the content has already some human created exercises) or generate some question/exercise that confirms their diagnosis.