Um... random mutation is perfectly observable and testable as is natural selection. In fact Intelligent Design accepts both of these to a large degree unchanged.
I never said they weren't. However, there's zero evidence to suggest that either, separate or in combination with one another, is capable of producing the brilliant engineering found throughout the biological world.
I take it though you have never studied Darwin's original theory... or genetics.
Darwin's original theory was published in 1859. While I'm familiar with it, I'm also fully aware that it came from a time of great ignorance.
Perhaps you should be less concerned with Victorian era biology literature and catch up with those of us in the 21st century.
I can also only assume that you disagree with Behe on Intelligent Design and the validity of common decent. He is 100% behind common decent and the ability of natural selection and random mutation to produce new species. He limits ID to a few key steps in the process.
wa:do
Behe's demonstrated that random mutation and natural selection are very limited, hence the title of his book,
The Edge of Evolution: The Search for the Limits of Darwinism. Furthermore, speciation is defined in such a way that it fits well within the boundaries of these limitations, which is why it's irrelevant to the debate.
For those unaware, speciation is microevolution. That is, it's superficial, typically cosmetic, change, rather than macroevolution, which is fundamental change.
The different breeds of dog is probably the most well-known example of speciation, and, as you can see, they present nothing more than superficial change. Their anatomy is fundamentally identical (read: zero macroevolution), however, there is much size/color variation.
The problem is, microevolution cannot be extrapolated to explain macroevolution. You can continue breeding dogs from now until the end of eternity. Accumulating changes to fur coloration and variation in trait size will never produce anything other than dogs with differing fur color and differing sized traits. Lots of speciation; nothing more.
If anyone disagree with this, then I'd like for them to demonstrate how I am wrong.