Yes, Darwin said that. But you're picking and choosing: The next sentence says that he can unterstand how such a mechanism could be created in steps.
Next, the 'TrueOrigins' site you linked to seems to bank a lot on how we don't know how non-living matter formed living matter. TrueOrigins proceeds to set up a fine array of strawmen:
* 1. Nobel laureate Dr. Francis Crick promotes ‘directed panspermia’ (i.e., ‘DNA originated somewhere ‘out in space’ and somehow made its way to Earth’), apparently having recognized the odds against a natural earthly cause for DNA.[1]
* 2. Richard Dawkins (The Blind Watchmaker, W. W. Norton, New York, 1986) assumes the number (1020 by his accounting) of theoretically possible planets that may exist in the universe in order to provide sufficient opportunities for the highly improbable event of life to occur naturally (i.e., without intelligent direction).
* 3. Barrow and Tipler (The Anthropic Cosmological Principle, Oxford University Press, 1986) go far beyond Dawkins in that they invoke entire universes (theoretical, of course) as the potential arenas for (natural) life to emerge.
* 4. Kauffman (The Origins of Order: Self-Organization and Selection in Evolution, Oxford, 1993) takes a different route than Dawkins, Barrow and Tipler. *Kauffman brings into the panorama a hypothetical set of laws by which life may emerge here on Earth solely through (only) natural process.
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All this is merely an attempt to select the most easily refutable theories and portray all of evolution relying on it. There are multiple other theories out there. Labs have even demonstrated how a type of clay common on the ocean floor can act as a catalyst for the formation of RNA from materials that were all present at the time of the origination of life on this planet.
It's quite similar to me saying that all creationists believe the world is flat. It's laughable to believe such a thing, but some creationists DO believe that. But that doesn't mean all creationists do, and proclaiming that is wrong.
Next, it preys on a distinction between "microevolution" and "macroevolution". In fact, there is no such thing. Evolution is evolution, period. Macroevolution is different only in timescale. The people at TrueOrigins created the distinction themselves, it isn't something evolution is trying to cover up. And there IS evidence for large-scale evolution. The fossil record! It's been around for years, and is growing more and more complete every day. In Darwin's time, fossils suggested a link between species, but with the continually filling gaps between species, we can not only link two species together, we can show all the intermediate mutations and when they occurred.
Another major bit of evidence for large-scale evolution is Endogenous Retroviruses. It gets a bit complicated, but there's a wiki page on it HERE. More or less, viruses infect a species. They transcribe a bit of their own genetic code into the host's DNA as they infect the host. The alterations in the DNA can be spotted for incredibly long periods after infection--10 million years or more afterwards, the genetic code still remains. Meanwhile, the host species continues to diverge into multiple new species, but each one contains the unique Endogenous Retrovirus. We can use these as markers to determine which species are related via a common ancestor. I
Here's the punch line: Humans and chimps share some Endogenous Retroviruses. There's no way the viruses could have separately infected humans and chimps: The virus in question's code is far too specialized to make the jump between two species. Additionally, the alterations to DNA would be different if the hosts had speciated before being infected. This leads to the conclusion that humans and chimpanzees have common ancestors.
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