Evolution takes a little more than 80 years.
You just gotta have faith!
PS That’s millions of generations, in which the fruit flies are shocked, exposed to chemicals, X-rays, etc, all specifically designed to induce mutations. And yet, it either kills them, makes them sterile, or they remain fruitflies.
In the wild, maybe. But man has been TRYING to get those pesky fruit flies to change and for all man's deliberate efforts to manipulate fruit fly genetics, it hasn't happened except to get some deformed fruit flies.
Bacteria sure seem to mutate faster than 80 years.
Besides, the disingenuous argument argument you presented, 80 years worth of fruit flies produces far more generations than 80 years of human evolution.