Predictive algorithms may help us shop, discover new music or literature, but do they belong in the courthouse? Dartmouth professor Dr. Hany Farid reverse engineers the inherent dangers and potential biases of recommendations engines built to mete out justice in today's criminal justice system. The co-founder and CTO of Fourandsix Technologies, an image authentication and forensics company, Hany Farid works to advance the field of digital forensics.