I made a post on studentofnature about this, but Ramsey's initial offering revolves around three intentionally undefined terms:
'evolution'
'genetic information'
'(true) transitional fossil/form.'
After a bit of thought, I see that they're related, at least in his head.
Based on Ramsey's own words, I believe that his concept of evolution is, quite literally, the one pictured here on the left:
I believe this based on comments such as the following:
"Students should be clearly taught there is a lack of observational support or verification for simple-to-complex organism evolution."
Sometimes called the 'great chain of being,' Ramsey portrays evolution, or at least his 'upward evolution,' as a rise in complexity over time. So, in Ramsey world, evolution starts at the bottom rung of the ladder, presumably with bacteria, and then 'upward evolution' takes it towards ever-increasing levels of complexity.
So, bacteria beget the more complex protista that beget the more complex invertebrates that beget the more complex vertebrates until we arrive at 'us,' at the top, the pinnacle of evolution, a masterpiece of complexity and the seeming end-product of evolution.
Now, this is a critical misunderstanding. In Ramsey world, humans are undoubtedly 'the most evolved' organism, whereas our proposed ancestry, including the reptiles and amphibians, are 'lower.'
So, with this in mind, the 'genetic information' Ramsey is talking about is that which occurs at every rung of that ladder to make life increasingly complex. I doubt he's thought it out too much beyond that. He definitely believes it has 'something to do with DNA,' and has undoubtedly taken on some of the pseudo-scientific ID arguments in this regards, including Dembski's "Complex Specified Information" and the like. However, Ramsey is no Dembski, so he never really expounds on what exactly 'genetic information' is in his own eyes. But based on his own creationist background, it's probably something akin to what WarriorAngel recently offered - a human sprouting wings, some organism with a new body system or some other saltation-of-genetics model.
Lastly we have 'transitional' forms. Now, I'm going to guess that Ramsey isn't actually foolish enough to believe that there's no candidates for 'transitionals,' and I believe he very purposefully said 'true' transitionals to cover his tail as he undoubtedly realize that Aron, much more familiar with the fossil record than he, was going to call him on this point. I'd go so far as to say that Ramsey probably expects it, but by not having defined transitional, he will undoubtedly brush aside every single, solitary example (expectedly) offered by Aron in his next response.
So what is a
true transitional form in Ramsey world? I've picked up on a few clues:
Firstly, looks at Ramsey's comments in regards to human ancestry:
"As shown in the nearby figure from Nature, (dotted lines are assumed species, solid lines are found species), most presumed species are hypothetical only there is NO direct evidence of their existence, most of the evidence we do have consists of a single fossil that in many cases is only fragmentary, NONE of the found fossils are directly transitional to its ancestors or descendants, NONE are even on an adjacent branch of the family tree, and NONE have been found that are even imagined to be a common ancestor."
Obviously, he's taking a lot of creative license in what he's saying, and screwing up a lot in his interpretation, but his 'point' is that you can't conclusively prove that proposed transitionals are DIRECTLY ancestral to one lineage and DIRECTLY descended from another. This is the first half of his definition, imho.
The second half becomes clear in the following comment:
"While some features of some species look similar, (Nelson invites us to just look at the pictures), this does not in any way prove common ancestry. In today's information age we know that what matters is the underlying information contained in the DNA. "
This, in my opinion, shows the other way Ramsey is going to cover his butt - even if Aron shows that a given proposed transitional is undoubtedly part of a grouping of organisms which meet his criteria (with the caveat that no particular, identified species could ever be positively concluded to be, itself, as directly meeting his criteria), he can fall back on this - that the only evidence that 'counts' is an analysis of DNA.
My guess is that he realizes that this request is Totally Impossible even above and beyond his other qualification of transitional. Short of a time machine, it's profoundly unlikely to have any preserved DNA from highly ancestral organisms bordering on the absurd.
So, after Aron undoubtedly gives Ramsey a barrage of transitionals that would be hard to defend with his hardline, "you can't absolutely prove that that particular specimen was part of a population that was directly descended from A and directly ancestral to B," he will simply fall back to "without DNA testing, you're relying on APPARENT similarities, and that's not 'PROOF.'"
I'm really not trying to paint Ramsey is some sort of clever mastermind - I don't give him that much credit. But even creationists can get together and figure out how to properly obfuscate their arguments to the point that they're extremely hard to take down. This was made possible by Ramsey refusing any set of definitions, and I find it entirely likely that he will continue to do so at every step, so he can always weasel his way out of dealing with the enormity of evidence that he has to on some level realize will be leveled at him.
This all of course is just my $.02 - and I won't pretend to tell Aron how to reply, but I do hope he reads this and take into consideration Ramsey's apparent mentality. Then again, I'm pretty sure he has him figured out.