Passage Summary: An astronomer argues that building a telescope on a specific mountain is a great idea because the site is clear and the building will actually protect the local environment by keeping out crowds of hikers and tourists.

Conclusion: Mount Shalko is the ideal location for the proposed astronomical observatory.

Reasoning: The site fits the physical requirements, lacks light and smog pollution, and protects local wildlife by preventing damage from 200,000 annual recreational visitors.

Analysis: The astronomer's defense against ecological critics relies on the assumption that the observatory's presence is less harmful than the 200,000 visitors it replaces. To weaken this, we should look for information suggesting the observatory itself causes significant ecological damage or that the 'salvation' of the wildlife is overstated. For instance, perhaps the construction process is more destructive than the hikers, or the visitors won't actually be stopped. We want to find a reason why the 'perfect' site might actually be a disaster for the very life-forms the astronomer claims to be saving.