Two things I also observe:
The fruit fly experiments in the early decades of the 1900s should have been the end of it. Fruit flies breed new generations every other day so that running any sort of a decades-long experiment with fruit flies will involve more generations of them than there have ever been of anything even remotely resembling humans on our planet. Those flies were subjected to everything in the world known to cause mutations and the mutants were recombined every possible way; all they ever got were sterile freaks, and fruit flies. Several prominent scientists publicly denounced evolution at that point in time including the famous case of Richard Goldschmidt.
The failure was due to the fact that our entire living world is driven by information and the only information there ever was in the picture was that for a fruit fly. When the DNA/RNA information scheme was discovered, even if the fruit fly thing had never happened, evolution should have been discarded on the spot. But GIVEN the fact of the fruit fly experiments, somebody HAD to have thought to himself "Hey, THAT'S THE REASON THE STEENKIN FRUIT FLY EXPERIMENTS FAILED!!!!!!"
In other words, there is no way in the world anybody should be believing in evolution 40 years after the discovery of DNA and, again, that's just one overwhelming disproof amongst a number of such. Again no legitimate science theory would ever survive such a history.
Excellent comments - thanks!