This is so hard to get creationists like Grady to understand. The only classification in this that has any reality is speciation. We can give speciation a working definition, something we can measure and thus test. The rest are just names and there is no working or operational definition for them just what taxonomists agree on.
I suspect this is just too abstract for the concrete thinking of many creationists.
Dizredux
Perhaps it is too difficult for them to understand.
I guess it is a bit like history. We tend take periods of time and give them an important sounding name, like the Middle Ages or Hellenistic Greece. If someone was living during the Middle Ages they wouldn't have written "It sure is a nice day here in the Middle Ages" in their diary. That group of years was devised after the fact by historians. Even more, there was no difference between the movement of one day to the next within the Middle Ages than there was a movement from the very last day of the Middle Ages and the first day of the Modern Era.
The same for speciation. Every "day" is a speciation event. The passage from one human constructed group of species to another is no different than the passage of time from the Middle Ages to the Modern Era.
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