Parky76 asks us: If you saw a watch on the ground wouldn't it be insane to think it just grew there without a maker?
It would be equally insane if you found a watch on the ground and no one had ever seen any timepiece anywhere on earth before -- and yet you knew it was a watch! When you figured it out, you might wonder if a UFO brought it here.
But when we look at a beautifully-designed mechanism, we know there is a whole technological background behind it:
- the shadow stick
- the hourglass
- the water clock
- marked candles
- mechanical clocks (with escapements) that derive their power from falling weights
- spring-driven clocks
- pendulum clocks
- electric clocks
- atomic clocks.
So in Esau the Shepherd, used to telling time by the sun, didn't just sit down one day around 1007 BCE and hew out an atomic clock from gopherwood.
Similarly, we don't just find a complex organism on the ground. We find a whole sequence of organisms, from the simplest through intermediate forms to the complex organism.
We look at the mechanism that humans have used to customize the design of horses, cattle, dogs, etc., to make them more useful to humans. We call that mechanism
artificial selection.
Then a great light dawns. We see that organisms are naturally selected by the natural workings of wind, weather, temperature, volcanoes, flooding, drying, meteorites, ice ages, and so forth.
We also see that there are variations within any naturally existing species in the wild, some bigger, some redder, some with better tolerance for cold, and so forth. We might call each form a 'subset' of that species.
With each naturally-occurring change, one or more subsets of existing species may survive, because of the natural variation it happens to possess. And some just can't make it.
We call this "natural" selection.
And the great light that dawns leads to wonderful insights into just how the world works. Well. It doesn't dawn on
everyone.