This product claims to unlock "smarter" studying. How does it make studying smarter?

I'm assuming this uses some LLM to generate answers. How can you guarantee that they are accurate, as you claim?

I'm skeptical of this product simply because I don't believe studying is hard because we don't have enough tools. It's hard because the process to build knowledge is inherently long. It takes patience and revisiting topics and concepts many times. Even if you had all the best content on the subject you want to learn, this wouldn't make your learning much faster/easier. Because in the end of the day, what builds knowledge is repeated exposure to the subject, from multiple angles.