Bradskii:
There is no comparison to how society operates. We are talking about nature. If you were a dog and needed food, would you eat the chickens that were easy to catch or the ones that were difficult? It’s an easy answer as I’m sure you’d agree. It’s literally the survival of the fittest.
I understand and agree with the concept only as far as selective breeding goes, not
the morphing into completely new species. Plus there’s no fossil records to back that up. And what you say is survival of the fittest, I call it a food chain.
No problem. And yet again I must insist that no-one is talking about any new species. We’re just looking at how things tend to work. And we can’t call this selective breeding because that implies that someone is making a conscious decision to intentionally direct the changes in the organism. As in selective breeding sheep to increase the fleece weight. In the case of the dogs and chickens, there is no conscious decision to increase the flying ability of the chooks or the climbing ability of the dogs. This is all happening quite naturally.
And yes, it’s a food chain. The dogs eat the chickens, the chickens eat the insects, the insects eat smaller insects etc. This is always the case. But in this example, the chickens and the dogs that tend to survive are the ones that are best fitted to their environment. That is, the dogs that can climb the best get to eat the chickens that can’t fly very well and the chickens that fly better than their peers stay alive longer. In both examples, the organism that survives longer is more likely to pass on the genes that enabled it to survive.
So now, from a group of dogs that could hardly climb, we have dogs that can climb quite well. And from a group of chickens that could hardly fly, we have chickens that can fly very well.
It seems that we’re in agreement up to this point. Yet still dogs and chickens. Just dogs and chickens with a greater ability to survive in their particular environment.
So if you were to return to the island many years later, you would probably be surprised to see chickens, which could barely flap up to a low branch years ago now flying to the top of the trees.
And they are still chickens. Agreed?