Under the Past we usually imply a logical sequence of events which have already happened, a number of events in chronological order. The Past is a question of many minds coming to agree that was the past and not other. What we consider as our past is a lot of contradiction. To bring them into some kind of order or at least agreement we have to make up a concept. When we choose a concept we choose reality.
Every event is a form which can carry in it self many different meanings. Therefore the interpretation thoroughly depends on the observer’s will and motives. Moreover it depends on the time, circumstances and so far is relative and nothing more but a lot of agreement. Our attitude towards the past can alter its interpretation and therefore is able to choose it. There is no absolute past, there is always a possibility at any time that some present event will alter it