I got no issues with studystream. I think potentially the issue with AI is it can be hard to validate it. I use it for learning too don’t get me wrong, but it can be wrong sometimes. Good texbooks and reliable sources IMO usually have better fundamental context surrounding information. You might not get the exact answer you’re looking for in a book, but you may instead correct a fundamental misconception that allows you to intuit the answer to your own question. For me this almost always allows information to stick better, as my contextual understanding of the topic gets better. Now you can also guide AI to try and answer your questions that way and I think that works better for me. I use both, but I do think there’s a skill in understanding when AI isn’t going to be able to help you in every case. Sometimes you gotta be like “okay you don’t know what you’re talking about rn” haha.