Art: The beak of the finch would not be a good replacement for the moths for the
reasons I have already posted, namely it doesn't appear to be ongoing, and
doesn't allow us to observe the process or do experiments on it.
That's what makes it such a great example. No claims that "well it was experiments not nature". And yes the researchers involved observed the process for I believe 20 years.
Art: At least we can safely (I think) assert that the finch beak story would not
fold like the peppered moth story has, since it is not likely to be
challenged by experimental data, since it is not based on experimental
data, and the beak modification processes do not appear to be going on now.
It's based upon observational data. If that is not experimental what is...