You create severe problems with an interpretation that places the evolution of genus
Homo after the flood, but creationists still propose such things. One writes, for example:
Adam and Eve, and not the australopiths/habilines, are our actual ancestors. As pointed out by other creationists [e.g., Lubenow9], Homo ergaster, Homo erectus, Homo heidelbergensis, and Homo neanderthalensis can best be understood as racial variants of modern man-all descended from Adam and Eve, and most likely arising after the separation of people groups after Babel The non-transitions in ”human evolution’-on evolutionists’ terms[/i], by John Woodmorappe.
What is particularly amusing are the implications if this wonderful bit of creationist “science” were actually correct. For every tweak they make in established science there are several unintended implications.
For example, let's look at the claim that the change from modern man, i.e., Adam and Eve, to these four species of fossil man took place since the Babel incident, which is usually placed after the global flood and in the range of 4,000 to 5,300 years ago.
This change from modern man to
Homo ergaster would require a rate of evolution on the order of several hundred times as rapid as scientists posit for the change from
Homo ergaster to modern man!
This is in spite of the fact that most creationists deny evolution occurs on this scale at all; now they have not only proposed such a change themselves,
but see it several hundreds of times faster and in reverse!
This problem of creation "science" illustrates what happens when you try to twist established science to fit a biblical framework. For every forced fit there are many more unintended complications. Eventually you have to realize, after tweaking the facts to accommodate still more complications and creating still more problems, that natural history and human evolution just can't be force fit into a strict biblical framework.
And nothing short of abandoning all of science for a purely imaginary world can make them fit.