Get a definition in, get an application in, get empirical evidence in, get measurement problems in erm, get sort of contentious issues type of, or criticisms in erm, don't draw, don't do diagrams as they're probably, the only, the only principal difference between this and an essay, you just haven't got the time, right, so don't be tempted, unless you can do a very quick diagram that sum, sums it up.