Big Data is a big deal for Corporate America right now, yes—but that doesn’t necessarily mean the idea is, well, a big bang. “A series of familiar ideas writ large” may be the better way to put it.

Take the property and casualty insurance market. Underwriting policies has always been a mix of art and science, says Claude Yoder, head of global analytics for insurance broker and risk adviser Marsh, but with the advent of Big Data, “it’s added more of the science flavor.”