"Speciation has been directly observed, but within limits. In no way has science directly observed a speciation that extends over a billion year history from simple to more complex biological entities. An amoeba-to-man history can only be the product of speculation and extrapolation. This is not a fallacious argument as you assert."
Sure we have: the fossil record. You realize if we observed this type of "hyper"-evolution, evolutionary theory would be falsified, right?
Of course, the fossil record isn't the only thing: comparative genomics, molecular phylogenies, and morphological/embryological phylogenies all provide overwhelmingly strong support for common descent.
Wait'll next year! No, wait! We'll probably have to be content with indirect evidence for this one within our own lifetimes.
Doesn't prove it didn't happen, though. Just means we don't live very long as individuals compared to the big scheme of things. We can be receptive to the evidence of things beyond our own brief moment or we can stay stupid.
Real science is about prying open the secrets of the universe by whatever means necessary. Creation/ID is about staying stupid.