[Jaysun]

"What proof do we have that a species can make a dramatic change into a completely different species over any period of time, no matter how long?"

That is not how it works. Go back and study basic biology and get back to us.

If you're not claiming that a species can make a dramatic change into a completely different species over time, then what are you claiming?

[shubi]

I am not going to give you lessons in biology unless you are willing to pay me. Go study on your own. I am not your research assistant.

[Ichneumon]

If you're not claiming that a species can make a dramatic change into a completely different species over time, then what are you claiming?

I think he's objecting to your "dramatic change" phrasing. While the end result XX million years down the road may look "dramatically" different from its distant ancestor, the phrase "dramatic *change*" sounds too much like the folks who expect that if evolution were true it would have to work by at some point having "a fish give birth to an elephant" or somesuch.

The actual *change* at any given point (i.e. generation to generation) is actually not very "dramatic" at all. It's only in the long run that all the smaller changes accumulate to the point of something "dramatically" modified from where it may have started.