The Importance of Forming an Infinite Collection

I do not think that the use of the word forming says anything about whether or not you are starting from nothing or starting from a prior collection. When I speak of forming an infinite collection, I mean completing an infinite collection. The series of past events is completed in the present event. And so we can talk about two ways of completing a collection by successive edition. One would be by starting at a point and never ending. The other way would be by never starting but ending at a point. To me that seems like an inconceivable task.