He argues that problems arise from an unworkable mix of "imperfect science and commanding law."

The ritual of controlling diabetes is an imperfect science, at best.

There is significant, but not absolute, spatial correlation among these characteristics, making the delineation of ecoregions an imperfect science.

"It's an imperfect science," Fisher said, estimating the success rate at 66 percent.

Using the results of past Presidential terms, as measured by the Dow, to forecast future ones is an imperfect science, to say the least.

Often this means importing celebrities from other venues, but it's an imperfect science at best and the rules are changing drastically.

However, despite efforts over the years to develop acceptable techniques for measuring grain losses, this remains an imperfect science.

Since this is an imperfect science, e-mail users often lose important, non-junk e-mail in the process.

Seismology has progressed to a point where earthquake prediction is a feasible, if still imperfect, science.

A: It is an imperfect science, but we have a better understanding of where the pain comes from.