Passage Summary: Even though cleaning the art might expose it to harmful acids from human breath, the curator says we have to do it because right now we aren't seeing the 'real' Michelangelo.

Conclusion: The restoration of the Michelangelo frescoes should proceed despite the risk of chemical damage.

Reasoning: The frescoes currently do not look the way they did when they were originally painted, and the goal is to see them in their original state.

Analysis: This 'Principle Justify' question requires us to find a rule that prioritizes aesthetic or historical authenticity over physical preservation. The curator admits there is a downside (acid damage), but concludes we should move forward anyway. To justify this, we need a principle that says something like: 'It is more important for art to be seen in its original intended state than to protect it from the wear and tear of the restoration process.' You are looking for a value judgment that breaks the tie between preservation and presentation in favor of presentation.