Passage Summary: We haven't tested the law of entropy everywhere in the universe, but because it has passed every test we've ever done, we call it a scientific law.

Conclusion: The generalization about entropy is correctly classified as a scientific law.

Reasoning: Even though it hasn't been tested in every possible condition or corner of the universe, it has survived all current tests and has never been proven false.

Analysis: The lecturer is defending the status of a 'law' despite a lack of exhaustive, universal verification. To justify this classification, we need a principle that bridges the gap between 'not yet falsified' and 'deserving of the title scientific law.' Look for a rule that says a generalization can be considered a law if it has consistently survived testing, even if those tests aren't exhaustive.