Evidence-based medicine draws on current research to look at the best treatment option. Just because the same treatment has been used before doesn't mean it would be the best choice in all cases, or that advancements haven't been done to provide new care options. By allowing physicians to look at solutions that aren't necessarily the norm, it empowers them to go further in providing care and make a larger investment in their patient's outcome.
The need for this change in learning comes even before the physician gets into practice. When this type of learning is employed in medical school, it better prepares students to think in new and original ways, coming up with individualized solutions. The only requirement is IRB approval when utilizing patients for research purposes. Once consent is given, the ideals of evidence-based medicine can be employed and the medical field can become better able to look at patient cases as contributory to solutions.