if this were written by a first-year college student, i'd ask, "does your evidence support the claim you are making?" i also believe its a world that is passing away. we all have more than we can do. there are a lot of cases where there are more than two classes in a data file. i have been ringing the bell for the last twenty minutes. you have the right to object to the processing of your data if you do not agree with the way in which we process it. we store your data so that we can help you more quickly next time. 