Hi, I am due to give a half an hour talk at a conference. I have some analytical and some numerical results that I want show. For one part of the work the numerics works fine but there is another part of the work where the general shape (I an computing waves in interfaces) is correct but the but the values at the end points are incorrect. My quandary is this, do I explain the method, show the results and explain why the results are wrong or do I leave that part out of the talk entirely? Not too sure if this is the correct forum.