Detecting design or intent in nature

[Heywood]

Birds with better nests have a higher survival rate. It is the bird that is evolving and the bird's ability that is evolving, not the nest.

I don't necessarily disagree with your interpretation of what is being observed. In fact I have refrained from using bird's nest as an example for quite a long time because it is ambiguous. The bird is evolving but so is the nest. The two systems are linked. Anyway, the reason I bring it up now is because it shows that contrary to Benny and Chas's assertion, I just don't look at evolutionary systems created by humans. I look for things which look like they evolved and then ask how they might have evolved.

For instance, how did we end up with a diversity of minerals we have today? Early earth did not have many kinds minerals....a few hundred maybe. Now there are thousands of different kinds of minerals. Was the system responsible for the increase in the number of different kinds of minerals evolutionary? Well if it is it should contain the following elements:

Replication
Heritable traits
Change
Selection

I don't see them when I think about how the diversity of minerals came to be.