I strongly believe in this you say, we need to have a multiple of data to compare from each other in other for us to arrived well at the desired destination having better results to proof for it, there are times whereby we will need to sit and make comparisons form what we are having at present to what we already have in times past, this also lies in our individual abilities and how we are able to relate information together to arrived on same outcome using different time frames in both the present and past events with their respective months altogether.