" What can the theory account for? If it can’t explain even color patterns, how much has it been exaggerated? Quite a bit, it turns out. To see the problem more clearly, let’s first think about studies of human nutrition. For decades the public was told to avoid foods with a lot of cholesterol. Recently, however, a government panel changed its mind, saying there’s no evidence that’s harmful. Here’s the problem for grand claims about evolution. Science can’t tell if cholesterol is bad for modern humans, who can be studied in great detail. Yet if that’s too hard, then how can science claim to know what affected plants and animals in the distant past? Ones that can’t be studied in real time like people? Ones that encountered myriad environmental influences over millions of years? That’s easy to answer: Science can’t and doesn’t know "

― Michael J. Behe , Darwin Devolves : The New Science About DNA That Challenges Evolution