Passage Summary: A business professor gave her students a digital assignment, but most of them printed it out anyway. Based on this, she thinks that even if we have digital books, people will still want paper versions, so real books aren't going anywhere.

Conclusion: Digital books will not result in the total disappearance of printed books.

Reasoning: In one instance, the majority of students in a business class chose to print out a digital assignment rather than read it on a computer screen.

Analysis: This is a generalization from a small, specific sample to a very broad conclusion about the future of an entire medium. To strengthen it, we need to show that these students' behavior is representative of general human preferences or that there's a fundamental reason why digital screens can't replace paper. Look for an answer that suggests the preference for paper isn't just a fluke or limited to this one class, but rather a widespread or permanent preference.