Two different species of fruitflies. But one never sees the emergence of, say, a bird or a mammal from the offspring of either Fruitfly B or C.
One has never seen an atom split, but Hiroshima was laid waist.
But the emergence of a new species IS EXACTLY what evolution is. So if you admit that two new species of fruit flies evolved from one another you are acknowledging evolution.
Of course it would take millions of years for a new GENUS to emerge. But these experiments along with the massive amount of fossil and genetic data makes the case for the theory of evolution.
I ask, what is your explanation for the vast variety of living organisms on earth? Let me hear your "theory".