I'm a medical resident. I see a patient in clinic, do a history and physical, sit down at a computer, and write a note describing what I just did. That's medical documentation, and it's a burdensome, growing problem.

The solution would be some combination of video or audio that records the clinical encounter and automatically generates a note based on what was discussed and performed. It falls under Paul Graham's "Schlep Task" (http://www.paulgraham.com/schlep.html); you'd have to work with individual clinicians, get their (and the patient's!) approval to record the encounter, record it from multiple angles, build tech into dumb devices (e.g. stethoscope, Dopplers for pulses, O2 saturations, and somehow use machine learning to integrate all that sensor data into a plain-text note.

It's probably the #1 problem from a provider's viewpoint right now, especially on the primary care side. Any individual provider will see 10-20 patients per day and write just as many notes.

Edit: I'd add that you'd also have to have access to existing notes because progress notes typically summarize the patient's prior visits.