Amy Herman created and conducts all sessions of ‘The Art of Perception’, an education program that was initially used to help medical students improve their observation skills. Often in diagnostics, you’re not looking for what you can see, but what you can’t – this is called the 'pertinent negative'. The same goes for investigations, and so the program was adapted for the New York City Police Department, and other intelligence agencies. Really, Herman says, it’s about fine-tuning something we take as a given: our visual intelligence. This refers to the concept that we see more than we can possibly process. What we register is just a fraction of the world around us, so how can we see more? Like any other skill or muscle, to get the most and best use out of it, it needs training.