Is it just me or is the OP making no sense at all. Several people have tried to explain the proper way to understand accuracy, ie., it is relative to one's needs and desires, but the light does not seem to be coming on. More specificity, critical thinking and understanding are required here. Until then, no one can really help you. You must be willing to think and study so you know what you are talking about, and I mean that as in you understand your subject matter, not as in I am being a smart ass. Good luck.