" . . . every last one of them has remained a fruit fly to the end."
When they started living longer, did they become something else? Or, were they still fruit flies?
>> this is wrong. They have gotten fruit flies to live longer.<<
Were they still fruit flies?
And yet, they are still fruit flies, right?
So, since in only 3 generations of human experiments with modern medicine, we now live 10% longer, are you going to call that evolution?
tfecw: "....this is wrong. They have gotten fruit flies to live longer."
No, read Berlinski's paragraph again: "....[the fruiy fly] has remained a fruit fly to the end, all efforts to see the miracle of speciation unavailing. "Fruit flies living longer" does not constitute speciation. Not even the most wacked-out Young-Earther denies that there is variation within species which can be manipulated, intentionally or by natural selection.
You can manipulate and select the gene pool of canines to produce animals taller or shorter, hairless or thick-coated, but that does not mean you can select for wings or antlers or Kelly Green Irish Setters.
A particularly well-adapted cow may be able to jump over a fence, but you cannot extrapolate and say "therefore with time plus chance, her offspring could jump over the moon."
"living longer lives" and "speciation" are two different problems requiring different solutions. "living longer lives" involves selecting existing information from the species' gene pool while eliminating or restricting other information. Speciation requires the addition and spread of altogether new information to the gene pool. That doesn't happen.