Oh, you know better than that. Lots of times genes are simply duplicated, and they both carry on where one was doing the work and the organism does fine. Lots of mutations are harmless because the protein they code for isn't changed in its active parts, its only changed in the part that holds the active parts in position. It would be like putting a small hole in beam and the beam still holds the roof up.
Easy to assume, in nature, the odds are against it:
We conclude that, in general, to be fixed in 10^8 generations, the production of novel protein features that require the participation of two or more amino acid residues simply by multiple point mutations in duplicated genes would entail population sizes of no less than 10^9. (
Behe 2004)
This doesn't magically happen because there's going to be a selective advantage. There is nothing simple about a duplicated gene and with the SRGAP2 it was a partial gene duplication followed by multiple exons, fully functional and then the original function in the parent gene has to be suppressed. It's absurd to just assume this is what happened simply because it's the only explanation you can think of.
Well I think the number you've got there that the ark could hold would be a tad large, and I think the number of species leans way closer to 60 million or more, but you do realize, I hope, that 2 million divided by 16,000 is 125. In other words, every pair on the ark had to evolve into 125 species within just a thousand years or so.
Again with exaggerations, there are 16,000 or so to start, as they disembark. As they spread across the face of the earth the descendant will adapt into 2 million to 60 million species, depending on how you define species. The kind of adaptive radiation has to take place in a few generations, most adaptations like adjusting to frigid arctic temperatures can't take a thousand years.
I don't understand why a God who refuses to use evolution but insists on using direct creation suddenly finds a need for 2 million or more species when why not just use 16000?
As usual, you have it twisted. The molecular mechanisms for adaptive radiation were created as part of the parental forms. When moving out over the face of the earth they evolve, actually adapt, into the millions of species we see now in all their vast array.
So where did T Rex or Stegosaurus go, do you suppose?
There isn't enough food, time or a large enough gene pool for them to develop now. They were killed before or during the flood.
Here's a conjecture. Suppose Satan should be in hell by now, but is unable to be cast there because he has some kind of covenant rights to be allowed on earth. Suppose the only way out of his rights to the earth would be if the earth itself rejected his presence. Suppose a naturally evolved species that developed intelligence and a spiritual life could speak for the earth and rightly reject him. This might be a reason for natural evolution to operate on earth.
And if Satan were to notice this happening and seduce the fall of the first spiritual homo sapien . . .
What would be the next phase of the struggle to get Satan into his proper place?
I only post such thoughts as an example of a possible theological reason for natural evolution to be required instead of optional. Others might have alternative ideas.
How about a solid theological reason that creation happened just as it was written in Genesis 1:
Day 1: God 'lets' the light in, thus creating the first day (
Gen. 1:4).
Day 2: God creates the upper atmosphere, called the 'firmament' (
Gen. 1:7).
Day 3: God separates the land from the seas and creates plant life (
Gen. 1:10).
Day 4: God then, 'sets', the heavenly lights in the visible sky (
Gen. 1:17).
Day 5: God creates the birds of the air and marine life (
Gen. 1:21).
Day 6: Finally, God creates the beasts of the field and Man (
Gen. 1:25).
Notice the progression, the first three days prepare the earth for life, the next three create life for the earth. Here's an exposition:
The phrase, 'heaven and the earth', is a Hebrew expression meaning the universe. All we really get from this passage is that the cosmos and earth were created, 'in the beginning'. The perspective of creation week is from the surface of the earth, starting with the Spirit of God hovering over the deep (
Gen. 1:2). In the chapter there are three words used for God's work in creation. The first is
'created' ('bara' H1254) a very precise term used only of God. It is used once to describe the creation of the universe (
Gen 1:1), then again to describe the creation of life (
Gen 1:21). Finally, in the closing verses, it is used three times for the creation of Adam and Eve (
Gen. 1:27). The word translated,
'made' (asah 6213), has a much broader range of meaning and is used to speak of the creation of the 'firmament' (
Gen 1:7), the sun, moon and stars (
Gen 1:16), procreation where offspring are made 'after his/their kind' (
Gen 1:25) and as a general reference to creation in it's vast array (
Gen 1:31).
Then there is a third term when God
'set' (nathan H2414), the lights of the sun, moon and stars so that their light is reqularly visible from the surface of the earth. In this way the narrative shifts from the very precise word for 'created' to the more general 'made', and then the much broader use of 'set'. (by yours truly)
The reason for the exposition is because of an important theological principle called the canon of Scripture. There is another profound theological reason taking the historical narrative literally, the language of the text couldn't be more explicit:
Create ‘bara’ (H1254) - 'This verb has profound thological significance, since it has only God as it’s subject. Only God can create in the sense implied by bara. The verb expresses the idea of creation out of nothing...all other verbs for “creating” allow a much broader range of meaning. a careful study of the passages where bara occurs shows that in the few nonpoetic uses, primarily in Genesis, the writer uses scientifically precise language to demonstrate that God brought the object or concept into being from previously nonexistant material. Things created, made and set by God: the heavens and the earth (
Gen. 1:1;
Isa. 40:26;
42:5;
45:18;
65:17); man (
Gen. 1:27;
5:2;
6:7;
Deut. 4:32;
Ps. 89:47;
Isa. 43:7;
45:12); Israel (
Isa. 43:1;
Mal. 2:10); a new thing (
Jer. 31:22); cloud and smoke (
Isa. 4:5); north and south (
Ps. 89:12); salvation and righteousness (
Isa. 45:8); speech (
Isa. 57:19); darkness (
Isa. 45:7); wind (
Amos 4:13); and a new heart (
Ps. 51:10).' (Vine 51)
There are theological reasons why creation is essential doctrine, not the least of which is that the principle transcends all of the Old and New Testament. Compare Genesis 1 to Revelation 22 sometime, one of the promises of the Gospel is that God is going to do it again at the end of the age.
You might not believe that creation happened as described in Genesis 1 but you really should understand what the text says in order to get a feel for the theological undercurrents here.
Grace and peace,
Mark