One of the challenges of conducting clinical trials is finding enough patient to include in a control arm of a study. This can slow the pace of drug development and increase its costs. Unlearn.AI is seeking to change that by using its artificial intelligence platform to create digital twins of trial participants that can serve as control arms in studies. We spoke to Charles Fisher, founder and CEO of Unlearn, about the concept of digital twins, the potential to accelerate clinical trials with their use, and why the company is focusing on the area of complex neurologic diseases.