Really? To my knowledge no large scale change or drift in genetic code has ever been observed. Certainly some bacteria has gone through quite a few generations and the changes observed do not merit your blind faith in evolution.
I don't feel like paraphrasing them for you, and I don't understand your Grand Canyon metaphor.
There is no possible road. Pointing out something in the middle suggests there might be a path, but it doesn't define the path.
*Sigh.* Okay, for one, there are the mosquitoes in the London Underground. They were bird-biting when they got trapped it the tunnels when the system was being built, and now they prey on rats and people, and they are almost impossible to breed with their aboveground cousins. "The ones underground are well on their way to becoming a separate species."
And then there's my personal favorite, the lizards on the island in the Mediterranean. Scientists moved 5 pairs of lizards to a new island, then war broke out and they couldn't get back for a while. When they finally did, 36 years later, they found "striking differences in head size and shape, increased bite strength and the development of new structures in the lizard’s digestive tracts."
Now, that article says "What could be debated, however, is how those changes are interpreted—whether or not they had a genetic basis." I'm sure scientists are examining that question right now. Is Behe or any other intelligent design advocate looking for evidence of the designer's touch during those 36 years? Yeah, sure they are.
Pointing out something in the middle suggests there might be a path, but it doesn't define the path.
Yes, but with enough stuff in the middle, we can assume there's a path until we define it (unless we refuse to). If someone shows me a series of snapshots of them in Philadelphia, Cincinnati, St. Louis, Denver, Las Vegas, and Los Angeles, time-stamped in sequence a day apart, I could assume there's some path linking them. Or I could insist they flew to Cincinnati, flew back to Philly, flew to St. Louis the next day, flew back to Philly, and so on, or that the photos must be Photoshopped, until they document to my satisfaction every turn, every rest stop, every gas station they stopped at along the way.
And once I accept that they took that path, I can predict that I could find evidence for it if I looked in Kansas. Which brings me to another testable prediction of evolution: the discovery of Tiktaalik. Paleontologists determined there was a gap in the fossil record, figured out how old the rocks that contained the missing fossil would be, used geological maps to find where rocks of the right age were, went there, and found the transitional form they predicted would be there. Testable prediction, confirmed.
I'll assume that you mean, has ever been observed within our lifetimes, because if you don't limit the statement like that, and leave it open, then we've observed humungous scale changes that have occurred over about 3.5 billion years or even longer. Even with the limit, numerous examples have occurred and been documented extensively within the literature. Often, such findings are publicized in the press. The fact that you personally do not read those articles does not mean they don't exist. Let me draw your attention to this abstract from an article that documents genetic drift in a couple of experimental populations taking place over a period of 15 years.
The rate of genetic drift is largely a function of the generation time. The reason we see so much genetic drift so quickly in bacteria is because they can produce a new generation every 20 minutes. We see it in larger organisms, too--just not as quickly.
There is no possible road. Pointing out something in the middle suggests there might be a path, but it doesn't define the path.
Your desire to not see any road does not equate to the non-existence of a road. Those of us who don't have an emotional attachment to the idea that the creation stories in the book of Genesis are actual literal accounts of real events are busy mapping the roads between A and C, measuring wheel ruts and examining tread marks, and gathering and analyzing the artifacts dropped along the way.
I'll assume that you mean, has ever been observed within our lifetimes, because if you don't limit the statement like that, and leave it open, then we've observed humungous scale changes that have occurred over about 3.5 billion years or even longer. Even with the limit, numerous examples have occurred and been documented extensively within the literature. Often, such findings are publicized in the press. The fact that you personally do not read those articles does not mean they don't exist. Let me draw your attention to this abstract from an article that documents genetic drift in a couple of experimental populations taking place over a period of 15 years.
The rate of genetic drift is largely a function of the generation time. The reason we see so much genetic drift so quickly in bacteria is because they can produce a new generation every 20 minutes. We see it in larger organisms, too--just not as quickly.
There is no possible road. Pointing out something in the middle suggests there might be a path, but it doesn't define the path.
Your desire to not see any road does not equate to the non-existence of a road. Those of us who don't have an emotional attachment to the idea that the creation stories in the book of Genesis are actual literal accounts of real events are busy mapping the roads between A and C, measuring wheel ruts and examining tread marks, and gathering and analyzing the artifacts dropped along the way.