You haven't spoken to many doctors then. I don't mean to be a jerk or snarky. It really is an awful piece of software. Among its worst flaws is that in most implementations, neither Cerner not Epic encourage structured data recording except for billing codes. This means that if a patient comes through the medical system frequently, doctors have to read pages and pages of unstructured text to get a sense of what's going on for the patient. The shittiness of the software (and I'm normally sorry to curse) is unquestionably leading to worse outcomes for patients.