This is the second level argument in the toasty topic roaming forensic science hallways regarding DNA mixtures collected from crime scenes and crime victims. In this article, the judge (not the first to do this) misses the point of protecting a defendant’s right to analyze the data experts have used to help convict him. A commercial software guy gets to keep his proprietary secrets secret regardless of the 6A. Here’s the reason for such arguments.

“the software’s findings described the match as “5.7 billion times more probable than a coincidental match to an unrelated black person.”

http://blogs.wsj.com/law/2016/02/05/judge-denies-access-to-source-code-for-dna-software-used-in-criminal-cases/