And if the science isn't well established (dare I say proven?), then stuff fails.
I know of a multimillion dollar pilot plant built on a gas chromatograph peak. Oops!, it was discovered when the plant was almost done that the peak was something other than what it was thought.
Can you say egg on your face? Some managerial (and others too) people wanted something so bad they took a short cut. Well, it was only money.
Right.
But so far they've been pretty good at not failing on the evolution front. Those recent finds were done by studying where the "correct" geologic layers were that should hold 3-4 million year old hominids. They went there, and sure nuf, there were fossils there that matched the expected change in species.
Evolutionary scientists have done pretty good predicting what we should find in related species DNA too, using Darwin's theory, and he didn't even know what DNA was.
Evolution still stands, despite the fever swamps of religiously motivated nay-sayers.