Possibility Does Not Describe the Circumstances
Circumstances and possibilities answer different questions. Circumstances describe what is present. What resources exist? What happened? What constraints are real? What agreements and conditions are already in place?
A possibility does not simply summarize those facts. It names something that is not yet established as fact.
That is why possibility should not be confused with prediction. Prediction asks what present evidence suggests is likely. Possibility can name a future that is not yet likely and then organize action around it.
This does not make circumstances irrelevant. A possibility that ignores material constraints can become fantasy. The distinction is that the future is not required to be merely a description of the present extended forward.
Circumstances tell us where we are. Possibility can help organize what we do from here.