Except, of course, those individuals who would like people to believe that you accomplish something like the Appassionata in a week or so.
You would also need to understand the focus of the assignment. I would guess that the point of learning one P&F per week is not to present a polished performance ready interpretation every week, but rather to develop an efficient technique in digesting large amounts of music in a short time span. This is a very real scenario that professional musicians face, especially if you are working in the accompanying field.