I think your mileage will vary by subject and level.

If you’re a complete novice reading a niche graduate level textbook on Tolstoy’s critique of the Russian war effort in War and Peace, you’re going to get some wild hallucinations, and you’ll have no idea how to determine fact from fiction.

If you’re reading a high school textbook about the history of pre-revolution Russia, the models will have pretty comprehensive coverage of every concept you’re likely to come across.

> If you’re reading a high school textbook about the history of pre-revolution Russia, the models will have pretty comprehensive coverage of every concept you’re likely to come across.

Even in that case, it can still get its wires crossed, creating connections between those concepts that aren't true.