[BMCDA]

At least they are not supernatural. From this point of view one can consider them to be natural occurrences. Of course in this case an intelligent agent is involved (space aliens, humans or weaverbirds).

But one always has to take into consideration that something can happen without an intervening agent from outside. Sure, it's hard to imagine how a house or even a computer as we know it today could have evolved without the "help" from humans but these entities are not self-replicators.

Evolution is what happens to imperfect self-replicators in a restrictive environment. As far as I know every organism is a self-replicating entity (either through cloning or sexual reproduction) so an explanation that needs an intervening agent from outside isn't necessary.

[Heartlander]

So, we are just along for the ride and nature is driving us? Hey, we don’t know exactly how we got here or where we are going, but hey, nature has got us this far… we don’t need a reason for everything, just an explanation. (doesn’t even need to be a great explanation)

Since evolution and nature are the driving forces - than everything we do must further it’s cause. No wait, is there a cause? Doesn’t really matter – we can manipulate nature and become it’s god (for lack of a better word).

It seems to me that we have dissected this tree to the point that we have lost sight of the forrest.