"But sequence comparisons simply can't account for the development of complex biochemical systems any more than Darwin's comparison of simple and complex eyes told him how vision worked"

This quote by Michael Behe is describing the limitations of series contrasts in understanding the development of complex biochemical systems. Behe is suggesting that series contrasts, such as those used by Charles Darwin to compare simple and complex eyes, are insufficient to explain the development of complicated biochemical systems. He is suggesting that series comparisons are not sufficient to describe the complex operations of complicated biochemical systems. Behe is recommending that there is more to the development of complicated biochemical systems than what can be translucented series contrasts. He is stressing the need for additional research study and understanding of the advancement of complicated biochemical systems in order to acquire a much better understanding of how they work. Behe's quote is a suggestion that series contrasts are insufficient to discuss the development of intricate biochemical systems and that additional research is needed to get a better understanding of how they work.