Big data, big hype, says Simon Garland, chief strategist at Kx Systems, a specialist in high-performance databases and timeseries analysis widely used in finance.

FORBES: At Kx Systems Big Data Is Old News

In addition to Walker, five witnesses testified Thursday morning, including officials with cell phone companies and a computer forensic specialist for the Ohio Bureau of Investigation who testified about her analysis of the contents of 17 cell phones examined by police.

CNN: STORY HIGHLIGHTS

The hypothesis came after extensive analysis of high resolution images published online last year by Factum Arte, a Madrid-based art restoration specialist who helped create a facsimile of King Tut's burial chamber in Luxor.

CNN: Search for Nefertiti's burial site given green light