A Stanford undergraduate presents to her professor a plan for a medical device that would diagnose and administer treatments via a patch on a patient’s skin. The professor patiently waits for her to finish her pitch and then explains all the reasons why this idea is unfeasible but encourages her young student to keep trying.  The student

If you had metal braces when you were younger, then you probably remember an unpleasant, jelly-like substance that was used to help make impressions of your teeth. All that has changed and now with the advantages of 3D printing, orthodontists can scan your teeth and mouth and convert the images into digital files which are used to develop a customi