Ethicist: Many environmentalists hold that the natural environment is morally valuable for its own sake, regardless of any benefits it provides us.
Evidence
It is philosophically disputable MV → D whether nature is morally B → D valuable, but undeniable that it is beautiful.
Conclusion
An argument for preserving B → LV nature that emphasizes nature’s beauty will be less vulnerable to logical objections than one that emphasizes its moral value.
Evaluate
The argument assumes that if D → LV an argument to preserve nature appeals to a characteristic of nature (e.g., moral value or beauty) that is philosophically indisputable, then that theory will be less vulnerable to logical objections.