Sure. By diversity of ideas I mean different models of reality.

It could be at different levels (more compartmentalized or more general). For example classic physics and quantic physics will give you 2 diverse ways to observe reality (one happens to include the other but that can be considered an accident).

When we're talking about more general diverse ideas, I mean the kind of diversity that leads to the understanding of different world views (or cosmovisions, as in having many different cosmic worldview of a society or civilization).