In the absence of diversity, the universe would become an infinite expanse of uniform space, indiscernible from a perfect vacuum. We cannot preserve diversity unless we know what it is, and how to measure it. The definition seems accurate, but it does not provide a good yardstick with which to measure diversity. It is more convenient to define diversity as a complexity of systems. The volume of data necessary to describe a system can be used as a quantitative measure of complexity and diversity.
Diversity has nothing to do with randomness.
Randomness can be described by a simple mathematical formula, and therefore lacks complexity which is the foundation of true diversity. The Principle Of Diversity Is The Universal Principle Of Ethics Normative ethics defines ethical actions as those which are good or desirable. We can argue what is good and desirable, but we cannot argue the fact that suppression of diversity reduces our field of options and stifles the breadth of our knowledge. Having few options and little knowledge, we cannot choose the most ethical actions. The principle of diversity calls for proliferation of diversity in all its forms, including seemingly unwelcome phenomena like parasites and mental disorders.