Evolution in action?

[Admiral Valdemar]

I guess you can use it, but that's stretching it a bit. For microevolution you can definately use it, not sure on its application for macro though.

Artificial Selection is mainly a tool for ethology and such though I think and has fallen out of favor though in that field.

There is no difference between micro and macroevolution, you prove one and the other is proved too, that's what Creationists fail to grasp. Macroevolution comes from evolution at the cellular level, how else would it occur.

[Raoul Duke, Jr.]

A sufficiently large amount of adaptation will eventually create incompatibility, hence speciation. What mechanism do you feel will abruptly rise up and stop further adaptation at some invisible point, in order to prevent speciation? Do you have evidence of this imaginary stopper-mechanism?

Well, there it is -- the dividing line between adaptation and speciation -- procreation.

Are you on drugs? Procreation is just another word for reproduction, and it is an essential component of evolutionary adaptation. What the fuck have you been smoking?

So the question then becomes, can any variety of the dogs from the example above create fertile offspring with any of the other varieties?

After only a few thousand years of selective breeding? Probably. But look at how large the structural differences are between, say, a chihuahua and a Great Dane, and ask yourself if you multiply those differences by a thousand, would they still be compatible.

But that line of demarcation is definitely there, in my opinion.

Yet you have provided not a shred of evidence for it. So what do you base your claims of its existence on? Gut feeling? Tarot cards? The voices in your head?

Whoa! I don't think you noticed, but I'm trying to say the same thing you are. I'm just pointing out that adaptation and speciation are distant stages along the same path, and we shouldn't confuse one for the other.